1. Crude oil is separated into fractions of different hydrocarbons by fractional distillation based on varying boiling points.
2. Larger hydrocarbon fractions can be cracked into smaller, more useful fractions like gasoline and diesel through catalytic cracking.
3. Unsaturated hydrocarbon monomers like ethene and styrene can undergo addition polymerization to form saturated polymers like polyethylene and polystyrene through a repeating process of carbon-carbon double bonds breaking and reforming.
The document discusses the chemical properties of alkanes and alkenes. It explains that alkanes contain carbon and hydrogen and are saturated hydrocarbons that are very stable due to strong C-H bonds. Alkanes undergo combustion and cracking reactions. Alkenes contain carbon-carbon double bonds, which make them more reactive than alkanes and allow them to undergo addition reactions with electrophiles such as halogens. The most important reaction of alkenes is polymerization, where alkene monomers combine to form large macromolecules or polymers. Common polymers include polyethylene, polypropylene, PVC, and PTFE.
The document is a worksheet on organic chemistry and hydrocarbons. It contains questions about topics like organic chemistry, hydrocarbons, alkanes, alkenes, alkynes, isomerism, and reactions of hydrocarbons. The questions test knowledge of hydrocarbon structures, naming conventions, properties, and reactions.
Organic chemistry is the study of carbon compounds. Carbon can form many structures through single, double, and triple bonds and straight, branched, and ring arrangements. Crude oil is purified through fractional distillation to produce hydrocarbon fractions like methane, propane, and octane. Larger alkanes are cracked into smaller, more useful alkenes and alkanes. Alkanes undergo substitution reactions like combustion and halogenation. Alkenes contain carbon-carbon double bonds and react through addition reactions like halogenation and hydration to form alcohols.
The document is a study guide for a chemistry exam covering various organic chemistry topics including allylic and conjugated systems, aromaticity, electrophilic aromatic substitution, carbonyl chemistry, amino acids, and peptide sequencing. It provides definitions, reaction mechanisms, and practice problems for students to review key concepts that will be tested like identifying hybridizations and drawing Frost diagrams for aromatic compounds, outlining the steps of electrophilic aromatic substitution and Friedel-Crafts reactions, interconverting functional groups like carbonyls, hemiacetals, and acetals, and sequencing peptides after cleavage by specific proteases. The study guide also offers general exam preparation advice and reminds students to trust their conceptual understanding of material to answer problems.
The document is a study guide for a chemistry exam covering various organic chemistry topics including allylic and conjugated systems, aromaticity, electrophilic aromatic substitution, carbonyl chemistry, amino acids, and peptide sequencing. It provides definitions, reaction mechanisms, and practice problems for key concepts that will be tested. The study guide emphasizes memorizing fundamental steps and rules for different reaction types as well as clearly indicating hybridizations and understanding how underlying concepts link various topics together. It concludes by recommending getting sufficient rest before the exam and trusting one's conceptual understanding of material to answer problems, even those involving unfamiliar reactions.
The document discusses crude oil and hydrocarbons. It states that crude oil is a mixture of hydrocarbons that can be separated into fractions by fractional distillation. The fractions contain hydrocarbons with similar numbers of carbon atoms. Most hydrocarbons in crude oil are alkanes, which have the general formula CnH2n+2. Alkanes and other hydrocarbons can undergo cracking to produce smaller, more useful molecules like alkenes. Alkenes are unsaturated and contain double carbon bonds.
Chapter 3 Note Taking Guide And OrganizerTia Hohler
The document provides information about the structure and properties of water molecules, including that water molecules are polar due to uneven electron distribution between the hydrogen and oxygen atoms. It also discusses hydrogen bonding between water molecules, and how this leads to properties like cohesion and adhesion. Finally, it notes how hydrogen bonding allows water to have unusual properties like being densest in its liquid form.
This document discusses alkanes, which are a homologous series of saturated hydrocarbons. The key points are:
1. Alkanes have the general formula CnH2n+2 and are characterized by single carbon-carbon and carbon-hydrogen bonds, making them saturated.
2. Physical properties of alkanes, such as melting/boiling points, viscosity, and density, increase with increasing number of carbon atoms due to stronger intermolecular forces.
3. Alkanes are generally unreactive due to strong bonds, but can undergo combustion reactions releasing energy, and substitution reactions replacing hydrogen with other atoms.
The document discusses the chemical properties of alkanes and alkenes. It explains that alkanes contain carbon and hydrogen and are saturated hydrocarbons that are very stable due to strong C-H bonds. Alkanes undergo combustion and cracking reactions. Alkenes contain carbon-carbon double bonds, which make them more reactive than alkanes and allow them to undergo addition reactions with electrophiles such as halogens. The most important reaction of alkenes is polymerization, where alkene monomers combine to form large macromolecules or polymers. Common polymers include polyethylene, polypropylene, PVC, and PTFE.
The document is a worksheet on organic chemistry and hydrocarbons. It contains questions about topics like organic chemistry, hydrocarbons, alkanes, alkenes, alkynes, isomerism, and reactions of hydrocarbons. The questions test knowledge of hydrocarbon structures, naming conventions, properties, and reactions.
Organic chemistry is the study of carbon compounds. Carbon can form many structures through single, double, and triple bonds and straight, branched, and ring arrangements. Crude oil is purified through fractional distillation to produce hydrocarbon fractions like methane, propane, and octane. Larger alkanes are cracked into smaller, more useful alkenes and alkanes. Alkanes undergo substitution reactions like combustion and halogenation. Alkenes contain carbon-carbon double bonds and react through addition reactions like halogenation and hydration to form alcohols.
The document is a study guide for a chemistry exam covering various organic chemistry topics including allylic and conjugated systems, aromaticity, electrophilic aromatic substitution, carbonyl chemistry, amino acids, and peptide sequencing. It provides definitions, reaction mechanisms, and practice problems for students to review key concepts that will be tested like identifying hybridizations and drawing Frost diagrams for aromatic compounds, outlining the steps of electrophilic aromatic substitution and Friedel-Crafts reactions, interconverting functional groups like carbonyls, hemiacetals, and acetals, and sequencing peptides after cleavage by specific proteases. The study guide also offers general exam preparation advice and reminds students to trust their conceptual understanding of material to answer problems.
The document is a study guide for a chemistry exam covering various organic chemistry topics including allylic and conjugated systems, aromaticity, electrophilic aromatic substitution, carbonyl chemistry, amino acids, and peptide sequencing. It provides definitions, reaction mechanisms, and practice problems for key concepts that will be tested. The study guide emphasizes memorizing fundamental steps and rules for different reaction types as well as clearly indicating hybridizations and understanding how underlying concepts link various topics together. It concludes by recommending getting sufficient rest before the exam and trusting one's conceptual understanding of material to answer problems, even those involving unfamiliar reactions.
The document discusses crude oil and hydrocarbons. It states that crude oil is a mixture of hydrocarbons that can be separated into fractions by fractional distillation. The fractions contain hydrocarbons with similar numbers of carbon atoms. Most hydrocarbons in crude oil are alkanes, which have the general formula CnH2n+2. Alkanes and other hydrocarbons can undergo cracking to produce smaller, more useful molecules like alkenes. Alkenes are unsaturated and contain double carbon bonds.
Chapter 3 Note Taking Guide And OrganizerTia Hohler
The document provides information about the structure and properties of water molecules, including that water molecules are polar due to uneven electron distribution between the hydrogen and oxygen atoms. It also discusses hydrogen bonding between water molecules, and how this leads to properties like cohesion and adhesion. Finally, it notes how hydrogen bonding allows water to have unusual properties like being densest in its liquid form.
This document discusses alkanes, which are a homologous series of saturated hydrocarbons. The key points are:
1. Alkanes have the general formula CnH2n+2 and are characterized by single carbon-carbon and carbon-hydrogen bonds, making them saturated.
2. Physical properties of alkanes, such as melting/boiling points, viscosity, and density, increase with increasing number of carbon atoms due to stronger intermolecular forces.
3. Alkanes are generally unreactive due to strong bonds, but can undergo combustion reactions releasing energy, and substitution reactions replacing hydrogen with other atoms.
The document discusses various processes involved in the production of ethylene and polymers from petroleum sources and biomass. It describes how ethylene is produced through thermal and catalytic cracking of petroleum fractions. Ethylene is a monomer that undergoes polymerization to form polyethylene. It also discusses how cellulose from biomass can potentially be used as a raw material to produce petrochemicals like ethylene.
This document provides an overview of chemical reactions and equations. It discusses word equations, balancing equations, types of chemical reactions including combination, decomposition, single replacement, double replacement, and combustion reactions. It also covers writing and balancing net ionic equations and using solubility rules to determine if a compound is soluble. The key topics covered are writing and balancing different types of chemical equations as well as writing net ionic equations.
1) Molecular compounds are bonded covalently and form molecules joined by shared pairs of electrons. They tend to have lower melting and boiling points than ionic compounds.
2) Covalent bonds form when atoms share one or more pairs of electrons to achieve noble gas configurations. Electron dot structures can represent these shared electrons.
3) Exceptions to the octet rule exist, such as when there is an odd number of valence electrons or the atom is in period 3 or beyond. Coordinate covalent bonds also involve electron pair donation.
Organic molecules can be made of carbon, hydrogen, oxygen, and other elements. They include carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are sugars and starches made of carbon, hydrogen, and oxygen. The shape of a molecule determines its function. Amino acids are the building blocks of proteins. Cell membranes are made of a phospholipid bilayer and embedded proteins that control what passes through. DNA functions as the genetic material and RNA helps make proteins.
Organic molecules can be made of carbon, hydrogen, oxygen, and other elements. They include carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are sugars and starches made of carbon, hydrogen, and oxygen. The shape of a molecule determines its function. Amino acids are the building blocks of proteins. Cell membranes are made of a phospholipid bilayer and embedded proteins that control what passes through. DNA functions as the genetic material and RNA carries instructions from DNA.
This document provides instructional material on hydrocarbons including alkanes, alkenes, and alkynes. It begins with objectives of explaining how the number of carbons relates to organic compound names and drawing structural formulas. An overview defines each hydrocarbon group and their general formulas. Several activities have students identify hydrocarbons as saturated or unsaturated, name compounds, and draw structural formulas. An assessment chart and crossword puzzle reinforce the concepts. Reference materials and an answer key are provided.
Alkenes readily undergo addition reactions where carbon-carbon double bonds become single bonds. Common addition reactions include bromination, hydrogenation, and combustion. Alkenes are manufactured through cracking of petroleum, which involves breaking down long-chain hydrocarbons into smaller molecules like alkenes over a catalyst at high temperatures. Cracking provides important products for fuels and materials.
The document discusses carbon fuels and their combustion. It notes that carbon fuels include methane, propane, and butane. Complete combustion of these fuels with oxygen produces carbon dioxide and water, releasing heat energy. Incomplete combustion produces carbon monoxide, soot, and less heat energy. It is important to ensure complete combustion through regular servicing of gas appliances to prevent the production of toxic carbon monoxide gas.
This document discusses fuel cells and the chemical reactions that occur within them. It provides information on:
1) The reaction of hydrogen and oxygen that produces heat and water. This exothermic reaction is used in hydrogen-oxygen fuel cells to generate electricity.
2) The basics of how a hydrogen-oxygen fuel cell works, involving the oxidation of hydrogen at the anode, the transport of protons through an electrolyte, and the reduction of oxygen at the cathode.
3) Some advantages of hydrogen-oxygen fuel cells over conventional power generation methods, such as higher efficiency.
This document discusses chemical reactions and the factors that affect their rates. It covers the signs of a chemical reaction and defines reactants and products. Reactions can be classified as synthesis, decomposition, combustion, single displacement or double displacement. Balancing chemical reactions requires ensuring equal numbers of atoms on each side. The rate of a reaction is affected by temperature, surface area, concentration, pressure, molecule size, and the presence of a catalyst. Equilibrium is the state where the forward and reverse reactions occur at the same rate.
1. The document discusses several organic compounds including their molecular formulas, structures, and common uses. Carbon compounds like alkanes, alkenes and alkynes are discussed in terms of their bonding and properties.
2. Examples of uses mentioned include gasoline and ethanol as fuels, acetone as a solvent and in plastics/chemicals production, and formaldehyde as a building material and in household products.
3. The structures of hydrocarbons like alkanes, alkenes and alkynes are related to their bonding and properties, with saturated hydrocarbons containing only single bonds and unsaturated ones containing double or triple bonds.
This document provides a review of carbohydrates, lipids, and proteins. It includes diagrams of amino acid and monosaccharide structures. Condensation reactions are described which join monomers like amino acids and monosaccharides into polymers like proteins and polysaccharides. These reactions release water. Hydrolysis reactions break these polymers down. Characteristics of saturated and unsaturated fatty acids, and cis and trans fatty acid isomers are outlined. Carbohydrates and lipids are compared in their use for energy storage. Glycerol and fatty acid condensation into lipid molecules is depicted, along with the insolubility of most lipids due to their nonpolar hydrocarbon chains.
Unit 2 8 Alcohols And Halogenoalkanes NotesM F Ebden
This document provides an overview of organic chemistry concepts related to alcohols and halogenoalkanes. It discusses:
1. The IUPAC system for naming organic compounds and provides examples of naming alcohols and halogenoalkanes.
2. Details the properties and reactions of alcohols, including combustion, reactions with sodium, oxidation, substitution, and how primary, secondary, and tertiary alcohols differ in reactivity.
3. Explains properties and reactions of halogenoalkanes such as hydrolysis, elimination, substitution, and how a test can identify primary, secondary, and tertiary halogenoalkanes.
4.
The document discusses three main types of intermolecular forces:
1. Dipole-dipole interactions between polar molecules like HCl. These forces affect boiling points, with polar molecules having higher boiling points than nonpolar ones.
2. London dispersion forces exist between all molecules due to instantaneous dipoles. Bigger molecules with more electrons experience stronger London forces.
3. Hydrogen bonds form between molecules with hydrogen bonded to fluorine, oxygen, or nitrogen. These strong bonds significantly increase boiling points, as seen with HF having a much higher boiling point than other hydrogen halides due to hydrogen bonding. Intermolecular forces also influence solubility and whether substances are miscible with each other.
Hydrocarbons are compounds made of only carbon and hydrogen. They are important sources of energy used in fuels like natural gas, LPG, and gasoline. Hydrocarbons are also used to make polymers, solvents, dyes, and drugs. They can be classified as saturated (alkanes), unsaturated (alkenes and alkynes), or aromatic. The structures and properties of hydrocarbons depend on their classification and functional groups. Common reactions include substitution, addition, elimination, and rearrangement reactions.
1) Carbon cycles through both living and non-living components of the environment through various processes.
2) Photosynthesis removes carbon dioxide from the atmosphere and cellular respiration releases it back.
3) Carbon is also stored long-term in fossil fuels through the fossilization of ancient plants and animals, and released through their combustion.
Crude oil contains a mixture of hydrocarbons that can be separated using fractional distillation. Shorter hydrocarbon molecules have fewer intermolecular bonds, resulting in lower boiling points and condensing at the top of the distillation column. Longer hydrocarbon molecules have higher boiling points due to more intermolecular bonds and condense at the bottom. However, the longer molecules have high viscosity making them less useful. Through a process called cracking, longer hydrocarbons are broken down by heating and passing over a catalyst, resulting in smaller alkanes and alkenes, which have a double carbon bond. Both alkanes and alkenes are useful hydrocarbons obtained through cracking crude oil.
This document provides an overview of chapter 2 in a chemistry textbook. Section 2.1 defines matter and its properties, including intensive and extensive properties, and the three states of matter - solid, liquid, and gas. Physical and chemical changes are also described. Section 2.2 discusses mixtures and their classification as homogeneous or heterogeneous. Methods for separating mixtures like filtration and distillation are outlined. Section 2.3 defines elements and compounds, and their differences. Chemical symbols and formulas are introduced. Section 2.4 describes chemical reactions and changes. Clues that a chemical reaction occurred like energy changes or new substances forming are identified. The law of conservation of mass is also stated.
This document discusses exothermic and endothermic reactions, bond breaking and forming during chemical reactions, and comparing different fuels based on the energy they release. It provides examples of classifying reactions as exothermic or endothermic based on temperature changes and bond energies. Equations are given for calculating the energy transferred when heating water and rearranging the equations to solve for different variables like temperature change or mass of water heated.
The document provides information on fuels and combustion. It discusses the fire triangle which includes fuel, oxygen, and heat. It defines what fuels are and lists examples of fossil fuels. It also discusses combustion and the products formed from burning hydrocarbons and alcohols. The document compares different fuels and their combustion properties. It addresses global warming and cracking of hydrocarbons.
Photography derives from the Greek words for "light" and "to write" and the word was coined by Sir John Herschel in 1839. Early philosophers and mathematicians described the principles of the pinhole camera as early as the 5th century BC, though the first photographs were not made until combining several technical discoveries. Cameras are now widely used around the world to capture wonderful sights and are symbols of both paparazzi and human freedom and ingenuity.
The document discusses several topics related to astronomy and space, including:
- The formation of elements like hydrogen in the Big Bang and later fusion in stars that led to heavier elements like carbon.
- How satellites orbit Earth due to centripetal force balancing gravitational attraction, with examples of low polar orbits and geostationary orbits.
- How planets orbit the Sun due to centripetal force balancing gravitational attraction.
- How the Sun will evolve over time from its current stable phase into a red giant and later a white dwarf or neutron star/black hole.
The document discusses various processes involved in the production of ethylene and polymers from petroleum sources and biomass. It describes how ethylene is produced through thermal and catalytic cracking of petroleum fractions. Ethylene is a monomer that undergoes polymerization to form polyethylene. It also discusses how cellulose from biomass can potentially be used as a raw material to produce petrochemicals like ethylene.
This document provides an overview of chemical reactions and equations. It discusses word equations, balancing equations, types of chemical reactions including combination, decomposition, single replacement, double replacement, and combustion reactions. It also covers writing and balancing net ionic equations and using solubility rules to determine if a compound is soluble. The key topics covered are writing and balancing different types of chemical equations as well as writing net ionic equations.
1) Molecular compounds are bonded covalently and form molecules joined by shared pairs of electrons. They tend to have lower melting and boiling points than ionic compounds.
2) Covalent bonds form when atoms share one or more pairs of electrons to achieve noble gas configurations. Electron dot structures can represent these shared electrons.
3) Exceptions to the octet rule exist, such as when there is an odd number of valence electrons or the atom is in period 3 or beyond. Coordinate covalent bonds also involve electron pair donation.
Organic molecules can be made of carbon, hydrogen, oxygen, and other elements. They include carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are sugars and starches made of carbon, hydrogen, and oxygen. The shape of a molecule determines its function. Amino acids are the building blocks of proteins. Cell membranes are made of a phospholipid bilayer and embedded proteins that control what passes through. DNA functions as the genetic material and RNA helps make proteins.
Organic molecules can be made of carbon, hydrogen, oxygen, and other elements. They include carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are sugars and starches made of carbon, hydrogen, and oxygen. The shape of a molecule determines its function. Amino acids are the building blocks of proteins. Cell membranes are made of a phospholipid bilayer and embedded proteins that control what passes through. DNA functions as the genetic material and RNA carries instructions from DNA.
This document provides instructional material on hydrocarbons including alkanes, alkenes, and alkynes. It begins with objectives of explaining how the number of carbons relates to organic compound names and drawing structural formulas. An overview defines each hydrocarbon group and their general formulas. Several activities have students identify hydrocarbons as saturated or unsaturated, name compounds, and draw structural formulas. An assessment chart and crossword puzzle reinforce the concepts. Reference materials and an answer key are provided.
Alkenes readily undergo addition reactions where carbon-carbon double bonds become single bonds. Common addition reactions include bromination, hydrogenation, and combustion. Alkenes are manufactured through cracking of petroleum, which involves breaking down long-chain hydrocarbons into smaller molecules like alkenes over a catalyst at high temperatures. Cracking provides important products for fuels and materials.
The document discusses carbon fuels and their combustion. It notes that carbon fuels include methane, propane, and butane. Complete combustion of these fuels with oxygen produces carbon dioxide and water, releasing heat energy. Incomplete combustion produces carbon monoxide, soot, and less heat energy. It is important to ensure complete combustion through regular servicing of gas appliances to prevent the production of toxic carbon monoxide gas.
This document discusses fuel cells and the chemical reactions that occur within them. It provides information on:
1) The reaction of hydrogen and oxygen that produces heat and water. This exothermic reaction is used in hydrogen-oxygen fuel cells to generate electricity.
2) The basics of how a hydrogen-oxygen fuel cell works, involving the oxidation of hydrogen at the anode, the transport of protons through an electrolyte, and the reduction of oxygen at the cathode.
3) Some advantages of hydrogen-oxygen fuel cells over conventional power generation methods, such as higher efficiency.
This document discusses chemical reactions and the factors that affect their rates. It covers the signs of a chemical reaction and defines reactants and products. Reactions can be classified as synthesis, decomposition, combustion, single displacement or double displacement. Balancing chemical reactions requires ensuring equal numbers of atoms on each side. The rate of a reaction is affected by temperature, surface area, concentration, pressure, molecule size, and the presence of a catalyst. Equilibrium is the state where the forward and reverse reactions occur at the same rate.
1. The document discusses several organic compounds including their molecular formulas, structures, and common uses. Carbon compounds like alkanes, alkenes and alkynes are discussed in terms of their bonding and properties.
2. Examples of uses mentioned include gasoline and ethanol as fuels, acetone as a solvent and in plastics/chemicals production, and formaldehyde as a building material and in household products.
3. The structures of hydrocarbons like alkanes, alkenes and alkynes are related to their bonding and properties, with saturated hydrocarbons containing only single bonds and unsaturated ones containing double or triple bonds.
This document provides a review of carbohydrates, lipids, and proteins. It includes diagrams of amino acid and monosaccharide structures. Condensation reactions are described which join monomers like amino acids and monosaccharides into polymers like proteins and polysaccharides. These reactions release water. Hydrolysis reactions break these polymers down. Characteristics of saturated and unsaturated fatty acids, and cis and trans fatty acid isomers are outlined. Carbohydrates and lipids are compared in their use for energy storage. Glycerol and fatty acid condensation into lipid molecules is depicted, along with the insolubility of most lipids due to their nonpolar hydrocarbon chains.
Unit 2 8 Alcohols And Halogenoalkanes NotesM F Ebden
This document provides an overview of organic chemistry concepts related to alcohols and halogenoalkanes. It discusses:
1. The IUPAC system for naming organic compounds and provides examples of naming alcohols and halogenoalkanes.
2. Details the properties and reactions of alcohols, including combustion, reactions with sodium, oxidation, substitution, and how primary, secondary, and tertiary alcohols differ in reactivity.
3. Explains properties and reactions of halogenoalkanes such as hydrolysis, elimination, substitution, and how a test can identify primary, secondary, and tertiary halogenoalkanes.
4.
The document discusses three main types of intermolecular forces:
1. Dipole-dipole interactions between polar molecules like HCl. These forces affect boiling points, with polar molecules having higher boiling points than nonpolar ones.
2. London dispersion forces exist between all molecules due to instantaneous dipoles. Bigger molecules with more electrons experience stronger London forces.
3. Hydrogen bonds form between molecules with hydrogen bonded to fluorine, oxygen, or nitrogen. These strong bonds significantly increase boiling points, as seen with HF having a much higher boiling point than other hydrogen halides due to hydrogen bonding. Intermolecular forces also influence solubility and whether substances are miscible with each other.
Hydrocarbons are compounds made of only carbon and hydrogen. They are important sources of energy used in fuels like natural gas, LPG, and gasoline. Hydrocarbons are also used to make polymers, solvents, dyes, and drugs. They can be classified as saturated (alkanes), unsaturated (alkenes and alkynes), or aromatic. The structures and properties of hydrocarbons depend on their classification and functional groups. Common reactions include substitution, addition, elimination, and rearrangement reactions.
1) Carbon cycles through both living and non-living components of the environment through various processes.
2) Photosynthesis removes carbon dioxide from the atmosphere and cellular respiration releases it back.
3) Carbon is also stored long-term in fossil fuels through the fossilization of ancient plants and animals, and released through their combustion.
Crude oil contains a mixture of hydrocarbons that can be separated using fractional distillation. Shorter hydrocarbon molecules have fewer intermolecular bonds, resulting in lower boiling points and condensing at the top of the distillation column. Longer hydrocarbon molecules have higher boiling points due to more intermolecular bonds and condense at the bottom. However, the longer molecules have high viscosity making them less useful. Through a process called cracking, longer hydrocarbons are broken down by heating and passing over a catalyst, resulting in smaller alkanes and alkenes, which have a double carbon bond. Both alkanes and alkenes are useful hydrocarbons obtained through cracking crude oil.
This document provides an overview of chapter 2 in a chemistry textbook. Section 2.1 defines matter and its properties, including intensive and extensive properties, and the three states of matter - solid, liquid, and gas. Physical and chemical changes are also described. Section 2.2 discusses mixtures and their classification as homogeneous or heterogeneous. Methods for separating mixtures like filtration and distillation are outlined. Section 2.3 defines elements and compounds, and their differences. Chemical symbols and formulas are introduced. Section 2.4 describes chemical reactions and changes. Clues that a chemical reaction occurred like energy changes or new substances forming are identified. The law of conservation of mass is also stated.
This document discusses exothermic and endothermic reactions, bond breaking and forming during chemical reactions, and comparing different fuels based on the energy they release. It provides examples of classifying reactions as exothermic or endothermic based on temperature changes and bond energies. Equations are given for calculating the energy transferred when heating water and rearranging the equations to solve for different variables like temperature change or mass of water heated.
The document provides information on fuels and combustion. It discusses the fire triangle which includes fuel, oxygen, and heat. It defines what fuels are and lists examples of fossil fuels. It also discusses combustion and the products formed from burning hydrocarbons and alcohols. The document compares different fuels and their combustion properties. It addresses global warming and cracking of hydrocarbons.
Similar to C1d,E Making Crude Oil Useful+Polymers (20)
Photography derives from the Greek words for "light" and "to write" and the word was coined by Sir John Herschel in 1839. Early philosophers and mathematicians described the principles of the pinhole camera as early as the 5th century BC, though the first photographs were not made until combining several technical discoveries. Cameras are now widely used around the world to capture wonderful sights and are symbols of both paparazzi and human freedom and ingenuity.
The document discusses several topics related to astronomy and space, including:
- The formation of elements like hydrogen in the Big Bang and later fusion in stars that led to heavier elements like carbon.
- How satellites orbit Earth due to centripetal force balancing gravitational attraction, with examples of low polar orbits and geostationary orbits.
- How planets orbit the Sun due to centripetal force balancing gravitational attraction.
- How the Sun will evolve over time from its current stable phase into a red giant and later a white dwarf or neutron star/black hole.
In alpha decay, the nucleus loses 2 protons and 2 neutrons, decreasing the atomic number by 2 and mass number by 4. In beta decay, a neutron changes to a proton and an electron is ejected, increasing the atomic number by 1 while keeping the mass number the same. In gamma decay, only energy is emitted with no change to the atomic or mass number.
Forces add up as vectors, so a 10N force to the left and an 8N force to the right result in a 2N force to the left. If the net force is zero, the object will stay at rest or move at a constant velocity. If there is a net force, the object will accelerate according to F=ma. Projectiles follow parabolic paths and take the same time to fall as dropped objects. Kinetic energy equals half the mass times the velocity squared.
The document summarizes key aspects of different parts of the electromagnetic spectrum including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It also discusses properties that apply across the spectrum such as all waves traveling at the speed of light, interference and diffraction effects. Additionally, it covers topics in waves and optics including reflection, refraction, lenses, sound waves, and seismic waves.
Heat is transferred through particles vibrating (conduction), air rising when hot (convection), and radiation being absorbed and reflected. Insulation in walls traps air which is an insulator, while different methods like passive solar heating and fossil fuels generate heat energy through various processes. When a solid melts it changes state at a constant temperature.
1) When a current passes through a copper wire in a magnetic field, it induces a voltage in the wire due to electromagnetic induction.
2) An alternating current generator uses a rotating coil in a magnetic field to generate a current, where the direction of the current reverses as the coil rotates.
3) Transformers use the principle of electromagnetic induction to change the voltage of an alternating current - a step-up transformer increases voltage through more turns on the secondary coil, while a step-down transformer decreases voltage.
1) Electrostatic charges involve the attraction and repulsion of objects based on whether they have equal or opposite charges. Charges are used in photocopiers, dust precipitators, and defibrillators.
2) Electricity involves the flow of electrons through conductors. The resistance of materials can change based on factors like temperature. Common circuit components include resistors, diodes, and capacitors.
3) Digital and analog signals are used to transmit information. Digital signals use 1s and 0s while analog signals have continuously varying values. Multiplexing and sampling allow more data to be transmitted.
The document defines key terms related to food chains and food webs, including biomass, producer, consumer, herbivore, carnivore, predator, prey, decomposer. It provides an example food chain starting with plants as producers, then herbivores, primary and secondary consumers, and ending with a carnivore or tertiary consumer at the top. A diagram shows how energy transfers through a pyramid-shaped food web from producers to different consumer levels.
A food chain shows that plants are eaten by herbivores like rabbits, which are then eaten by carnivores like lions. Producers like plants make their own food and are the first link in the food chain, while consumers eat other organisms. Herbivores eat plants, carnivores eat meat, predators eat other animals, and prey are eaten by predators. Decomposers break down dead organisms. Humans, eagles and lions are at the top of food pyramids as they are rarely preyed upon by other animals.
The document defines key terms related to food chains and food webs, including biomass, producer, consumer, herbivore, carnivore, predator, prey, decomposer. It provides an example food chain starting with plants as producers, then herbivores, primary and secondary consumers, and ending with a carnivore or tertiary consumer at the top. A diagram shows how energy transfers through a pyramid-shaped food web from producers to different consumer levels.
The document discusses key concepts related to food chains and biomass. It defines biomass as the total mass of a living thing excluding water. Biomass is composed of glucose and other substances produced through photosynthesis. A food chain diagrams how organisms feed on each other in an ecosystem, with producers like plants generating their own food, and consumers like herbivores and carnivores eating other organisms or animals. Decomposers feed on dead plants and animals. An example food chain is given of grass being eaten by a grasshopper and further up the chain.
A food chain shows how each living thing gets its food, with arrows indicating what eats what. Carnivores are meat-eating animals like cats, lions, and snakes. Producers like plants make their own food through photosynthesis. Consumers eat other organisms, and can be herbivores that eat plants or predators that hunt other animals. Prey are the animals or plants that are hunted by predators.
The document defines key terms related to food chains and ecosystems:
1) Biomass refers to dead plant and animal material that can be used as fuel.
2) A food chain describes a series of living things connected by predation, with each organism eating the one below it.
3) Producers are plants that use sunlight to produce their own food.
4) Consumers are herbivores, zooplankton and carnivores that eat other organisms.
5) Herbivores eat only plants, carnivores eat meat, and predators hunt other animals for food.
A food chain shows that plants are eaten by herbivores like rabbits, which are then eaten by carnivores like lions. Producers like plants make their own food and are the first link in the food chain, while consumers eat other organisms. Herbivores eat plants, carnivores eat meat, predators eat other animals, and prey are eaten by predators. Decomposers break down dead organisms. Humans, eagles and lions are at the top of food pyramids as they are rarely preyed upon by other animals.
The document describes various food chains that exist on Earth and a hypothetical food chain on Mars. On Earth, producers like plants undergo photosynthesis at the bottom of the food chain, while consumers like herbivores and carnivores eat other organisms or animals higher up the chain. A food chain in the ocean includes phytoplankton, zooplankton, fish, and blue whales. The hypothetical Martian food chain positions Mares bacteria at the bottom, which are eaten by Mares aliens that feed on rocks. These aliens are preyed upon by the apex predator Sky beasts.
Biomass refers to the total mass of living organisms in an ecosystem, excluding water. Producers in a food chain are always plants, which produce their own food through photosynthesis. A food chain represents the predator-prey relationships between species in an ecosystem, with producers like plants being eaten by consumers such as snails, fish and ducks, and with carnivores preying on other animals and serving as predators for their prey.
This document provides an overview of organic reaction mechanisms. It begins by explaining that chemical reactions can be studied in detail by examining how electrons move during the reaction, known as the reaction mechanism. It then discusses different types of organic reactions like addition, elimination, and substitution. The document also categorizes reagents as nucleophiles or electrophiles. It explains how single bonds can break through homolytic or heterolytic fission. Finally, it discusses free radical chemistry and how CFCs catalyze the destruction of stratospheric ozone through a free radical chain reaction.
The document discusses solar energy, including what it is, how it is harnessed, where it comes from, its advantages and disadvantages, and some of its uses. Solar energy comes from the sun and can be used to generate electricity or heat water. It is harnessed using solar panels that convert sunlight into electrical energy or use it to heat fluids. While a renewable source of energy, solar power has initial costs and requires large land areas for panels, and production of panels can release toxic byproducts if not properly handled.
Alternative fuels are fuels other than conventional fossil fuels like oil, coal, and natural gas. Some common alternative fuels include biodiesel, ethanol, hydrogen, and electricity from batteries, fuel cells, solar, or wind power. Alternative fuels are needed because fossil fuel resources are running out and renewable alternatives are needed. Battery electric vehicles use electric motors powered by rechargeable battery packs instead of gasoline engines. They have less pollution than gas cars but slower charging times and speeds. Solar cars are powered by solar panels that convert sunlight directly into electrical energy for electric motors. They produce zero emissions but are expensive and can only be used during the day. Fuel cells produce electricity through chemical reactions without combustion, which can be used to power electric
Temple of Asclepius in Thrace. Excavation resultsKrassimira Luka
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This presentation was provided by Rebecca Benner, Ph.D., of the American Society of Anesthesiologists, for the second session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session Two: 'Expanding Pathways to Publishing Careers,' was held June 13, 2024.
How to Make a Field Mandatory in Odoo 17Celine George
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The chapter Lifelines of National Economy in Class 10 Geography focuses on the various modes of transportation and communication that play a vital role in the economic development of a country. These lifelines are crucial for the movement of goods, services, and people, thereby connecting different regions and promoting economic activities.
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPRAHUL
This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
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Jemison, MacLaughlin, and Majumder "Broadening Pathways for Editors and Authors"
C1d,E Making Crude Oil Useful+Polymers
1. 1d,e Making Crude Oil Useful + Making Polymers
LPG Petrol
Paraffin Diesel
Crude Oil
Surfacing Heating Oil
Roads
This page is
just a front
cover
2. The Alkane and Alkene Hydrocarbon Families
• Hydrocarbons are compounds made from ____________ and __________ only.
• The 2 families of hydrocarbons that you need to learn about are called the
_______________ and the _______________ (be very careful with your
handwriting and spelling – examiners will not be kind to you!)
The Alkanes
• Carbon must always form 4 covalent chemical bonds
(you will find out why in another module what covalent bonds are but for now you must just learn
this fact and the name of the bonds because it will help you).
• When we draw and name chemicals we use rules to help us:
1. The name of a molecule with 1 carbon atom has the prefix
____
2
____
3
____
4
____
2. The end of the molecule name tells us which family of chemicals the
molecule belongs to
e.g. alkane names end in ane
alkene ene
To show how these rules work, consider the first 4 alkanes:
3. General formula:
CnH2n
The Alkenes C=C
• Alkenes are also hydrocarbons because they are made from hydrogen and carbon
only.
• The difference between alkenes and alkanes is that alkenes have a carbon-carbon
double covalent bond, C=C
• This makes alkenes more chemically reactive than alkanes e.g. for making polymers
• Using the same 2 rules as before but adding a C=C we can draw and name the
alkenes:
What would be the name and molecular formula of the next alkene in the series?
The Alkynes
You do not need to learn about the alkynes but they have a carbon-carbon triple bond.
See if you can use the rules that you have learned to draw and name three alkynes.
If you want a really hard challenge, try writing a general formula for the alkynes.
4. Testing for Alkanes and Alkenes
• Alkanes are said to be saturated because their carbon atoms are surrounded by as
many single covalent bonds as possible.
• Alkenes have at least one carbon-carbon double covalent bond, C=C, so they are said
to be unsaturated.
• For each of the displayed formulae below state whether they are saturated or
unsaturated (name the first 2 compounds):
cyclohexene
name:
saturated?:
• The C=C in alkenes means that alkenes are more reactive and there is a chemical
test you must learn that tells us whether we have a saturated hydrocarbon (alkane)
or an unsaturated hydrocarbon (alkene).
Testing for unsaturation with bromine water
Saturated Unsaturated
Bromine water is a
(alkanes) (alkenes, C=C)
yellow/brown colour
Higher
Why does the bromine water decolourise?
1. The __________ breaks in the alkene
2. The Br-Br bond breaks
3. Each bromine atom in the molecule attaches itself to a ______________ carbon atom
4. As the bromine molecules are used up their brown colour ________________
because the product is colourless.
5. Crude Oil
• ____________ Fuels are fuels that were made over _________________ of
years from dead plants and animals.
• There are 3 fossil fuels:
1. ________ – made from dead trees
2. ____________ – made from dead sea creatures
3. _____________ - usually found with crude oil
• Fossil fuels are ________________ resources. That means that there is a
______________ amount and they will run out.
• Fossil fuels are also said to be ___________________. That means that they are
being used up faster than they can be made.
Crude Oil
• Crude oil is made from many different ________________ mixed together
• These fractions are made from chemical compounds called ___________________
• Hydrocarbons are compounds made from the elements _________ and ______ only
• Hydrocarbons can be different sizes which gives them different boiling points. This
allows us to separate fractions by their different boiling points using fractional
distillation. Large fractions have high boiling points
Separating Crude Oil into fractions by Fractional Distillation
1. The crude oil is heated and _____________
and then fed into the fractionating tower
2. The hot vapours ________ and _________
3. As the fractions cool below their boiling point
they ___________ and are collected as liquids.
(Note that fractionating towers work 24 hours a day. In industry
they call this a continuous process)
See the separate table and learn the properties and uses of
the fractions
6. The Laboratory Fractional Distillation of Crude Oil
In the lab we distil a small amount of crude oil. This is called a ____________ process
————
————
————
———— ————
1. The hydrocarbon mixture is ______________________
2. When the liquid reaches the boiling point (bpt) of the _____________ fraction
that fraction _______________ then cools and _____________ in the test tube.
3. When all the smallest fraction has been collected the temperature of the liquid
starts to ____________ again. It increases to the bpt of the next largest fraction
which then evaporates. This process continues until all of the fractions have been
collected.
covalent bond, C-H
intermolecular force
(between molecules)
HIGHER
How does fractional distillation work?
1. Covalent bonds between carbon and hydrogen atoms within a hydrocarbon molecule
are stronger than the ________________ forces between hydrocarbon molecules
2. During boiling intermolecular forces are ______________
3. Intermolecular forces between large hydrocarbon molecules are ______________
than those between smaller hydrocarbon molecules
4. Hydrocarbons with large molecules have a ________________ boiling temperature
than those with smaller molecules
7. Catalytic Cracking
• The fractions produced in fractional distillation have different uses
• There is a greater demand for the ______________ fractions e.g. petrol than we
can meet but there is an _____________ of the larger fractions (more than we
can use).
• If we ___________ the large hydrocarbons with a ___________ (aluminium oxide,
Al2O3) we can ___________ them into shorter more ____________ hydrocarbons.
Test with bromine water
To find out if we have made both an alkane and an alkene we can test each fraction
with ____________ water. Alkenes turn bromine water from ________ to
___________
Summary
1. Cracking converts large alkane molecules into smaller __________ and
__________ molecules
2. Cracking makes useful alkene molecules that can be used to make ____________
8. 3. Cracking helps oil refineries match their ______________ of useful products such
as petrol with the __________________ for them (it turns long useless fractions
into shorter
poly = many more useful ones)
mer = part
mono = one
Addition Polymerisation
• The molecules in plastics are called _____________ molecules
• Polymers are very ____________ molecules
• They are made by adding lots of small molecules together called _____________
• The reaction that makes polymers from monomers is called __________________
• Polymerisation is a process that needs the following conditions:
1.
2.
Higher What monomers are used to make polymers?
Unsaturated hydrocarbons make good monomers because of their carbon-carbon double
bonds, C=C, so we often use alkene molecules as monomers
e.g. ______________ makes _______________ also known as polythene
Polymers are formed in two steps
1. One bond in the carbon-carbon double bond _____________
2. The molecules join end to end to make a long _______________
The ends of the chain are
left open to show that
more monomers could join
on.
(This is the only time in
chemistry you are allowed to
leave a bond unfinished).
9. Naming polymers
First write “poly” and then the name of the monomer in brackets afterwards e.g.
ethene poly(ethene)
styrene __________________
_______________ poly(vinyl chloride) PVC
10. Drawing polymers
Polymers can be made from hundreds of monomers joined together. It is not necessary
to draw every monomer in a polymer chain and instead we draw the _______________
e.g.
n
ethene
n
chloroethene
or vinyl chloride
poly(propene)
ALSO
styrene (replace H on ethene with benzene ring, C6H5)
tetrafluoroethene makes PTFE (substitute all 4 H on ethene with F)