English Class: The Periodic Table
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The document discusses the importance and history of the periodic table. It was created by Dmitri Mendeleev to organize the known elements according to increasing atomic weight and how they react. The periodic table groups elements into columns called families that share similar properties. It provides information on important families including hydrogen, alkali metals, alkaline earth metals, transition metals, and noble gases. The periodic table is a fundamental tool for chemists to understand the elements.
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Periodictable
The document discusses the importance and history of the periodic table. It explains how Dmitri Mendeleev created one of the first periodic tables by organizing elements by atomic weight, though the current table is organized by atomic number. The periodic table groups elements into rows called periods and columns called groups based on their chemical and physical properties. Certain groups are called families that contain elements with similar characteristics, such as the alkali metals in group 1 and the noble gases in group 18.
Periodic Table Presentation
The periodic table organizes the chemical elements in an orderly fashion based on their atomic structure. It allows chemists to predict properties and find information more easily. Dmitri Mendeleev created one of the first periodic tables by arranging elements in order of increasing atomic mass and placing those with similar properties in columns. The current table is organized by increasing atomic number and elements are grouped together based on their valence electrons and chemical properties. The periodic table is a useful tool that provides essential information about all known elements and the relationships between them.
The periodic table by Muhammad Fahad Ansari 12IEEM14
The periodic table organizes the known elements into rows and columns based on their atomic structure and properties. It was developed by Dmitri Mendeleev in the 1860s to bring order to the many known elements by arranging them in order of atomic mass and grouping those with similar chemical properties. The periodic table is useful for chemists because it allows them to easily find trends in physical and chemical properties among elements in the same group. It organizes vast amounts of information about elements in a concise visual format.
Periodic table
The periodic table organizes the elements and provides useful information to chemists. It was developed by Dmitri Mendeleev in the late 1800s by arranging elements in rows by atomic weight and columns by chemical properties. The modern periodic table arranges elements by atomic number and divides them into groups and periods that predict chemical and physical trends. The position of an element on the periodic table reveals its valence electrons and how it will bond and react.
Chemistry Periodic Table
The document discusses how elements are classified in the periodic table. It describes groups I, VII, and VIII, noting that group I elements are reactive metals, group VII are non-metals like halogens, and group VIII are inert noble gases. It also mentions transition metals are located in the middle of the periodic table.
Elements pererz e iñaky
Elements are composed of atoms of the same class that can be found naturally or created artificially in a laboratory. There are four main types of elements: alkali metals, halogens, transition metals, and noble gases. Noble gases are the most stable elements with full outer electron shells, while halogens have seven outer electrons and alkali metals have one. Transition metals occupy the central portion of the periodic table. Elements are classified based on their atomic numbers and valence electrons.
Group Names and Properties
Groups are columns on the periodic table that contain elements with the same number of valence electrons. The document discusses several important groups including hydrogen, alkali metals, alkaline earth metals, transition metals, boron family, carbon family, nitrogen family, oxygen family, halogens, and noble gases. It provides key details about the location of each group on the periodic table and chemical properties common to the elements within each group.
15 chapter revised
The document summarizes the development and key features of the periodic table. It describes how Dmitri Mendeleev created one of the first periodic tables in 1869 and arranged elements based on their properties. Later, Moseley improved on Mendeleev's work by arranging elements by atomic number instead of atomic mass. The modern periodic table still organizes elements into periods and groups, with transition metals in the middle and representative elements on either side.
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Periodictable
The document discusses the importance and history of the periodic table. It explains how Dmitri Mendeleev created one of the first periodic tables by organizing elements by atomic weight, though the current table is organized by atomic number. The periodic table groups elements into rows called periods and columns called groups based on their chemical and physical properties. Certain groups are called families that contain elements with similar characteristics, such as the alkali metals in group 1 and the noble gases in group 18.
Periodic Table Presentation
The periodic table organizes the chemical elements in an orderly fashion based on their atomic structure. It allows chemists to predict properties and find information more easily. Dmitri Mendeleev created one of the first periodic tables by arranging elements in order of increasing atomic mass and placing those with similar properties in columns. The current table is organized by increasing atomic number and elements are grouped together based on their valence electrons and chemical properties. The periodic table is a useful tool that provides essential information about all known elements and the relationships between them.
The periodic table by Muhammad Fahad Ansari 12IEEM14
The periodic table organizes the known elements into rows and columns based on their atomic structure and properties. It was developed by Dmitri Mendeleev in the 1860s to bring order to the many known elements by arranging them in order of atomic mass and grouping those with similar chemical properties. The periodic table is useful for chemists because it allows them to easily find trends in physical and chemical properties among elements in the same group. It organizes vast amounts of information about elements in a concise visual format.
Periodic table
The periodic table organizes the elements and provides useful information to chemists. It was developed by Dmitri Mendeleev in the late 1800s by arranging elements in rows by atomic weight and columns by chemical properties. The modern periodic table arranges elements by atomic number and divides them into groups and periods that predict chemical and physical trends. The position of an element on the periodic table reveals its valence electrons and how it will bond and react.
Chemistry Periodic Table
The document discusses how elements are classified in the periodic table. It describes groups I, VII, and VIII, noting that group I elements are reactive metals, group VII are non-metals like halogens, and group VIII are inert noble gases. It also mentions transition metals are located in the middle of the periodic table.
Elements pererz e iñaky
Elements are composed of atoms of the same class that can be found naturally or created artificially in a laboratory. There are four main types of elements: alkali metals, halogens, transition metals, and noble gases. Noble gases are the most stable elements with full outer electron shells, while halogens have seven outer electrons and alkali metals have one. Transition metals occupy the central portion of the periodic table. Elements are classified based on their atomic numbers and valence electrons.
Group Names and Properties
Groups are columns on the periodic table that contain elements with the same number of valence electrons. The document discusses several important groups including hydrogen, alkali metals, alkaline earth metals, transition metals, boron family, carbon family, nitrogen family, oxygen family, halogens, and noble gases. It provides key details about the location of each group on the periodic table and chemical properties common to the elements within each group.
15 chapter revised
The document summarizes the development and key features of the periodic table. It describes how Dmitri Mendeleev created one of the first periodic tables in 1869 and arranged elements based on their properties. Later, Moseley improved on Mendeleev's work by arranging elements by atomic number instead of atomic mass. The modern periodic table still organizes elements into periods and groups, with transition metals in the middle and representative elements on either side.
15 chapter revised
Dmitri Mendeleev invented the first periodic table in 1869 by arranging elements in order of increasing atomic mass. He left gaps for missing elements and correctly predicted their properties. Later, Moseley improved the table by arranging elements by atomic number. The periodic table is divided into metals, nonmetals, and metalloids. Transition elements make up groups 3-12, while groups 1-2 and 13-18 are representative elements including metals, nonmetals, and metalloids. Each element has unique physical and chemical properties based on its position in the periodic table.
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The document discusses the periodic table, including how it is arranged by periods and groups. Periods correspond to the number of electron shells, while groups indicate the number of valence electrons. Metals are generally found in the left side and are reactive, forming positive ions by losing electrons. Nonmetals are on the right side and form negative ions by gaining electrons. Noble gases have a full outer shell and are very stable, while halogens form diatomic molecules and colored salts. The reactivity of metals increases down a group as the hold on electrons gets weaker.
Periodic tables
- In 1866, John Newlands proposed an early periodic table called the Law of Octaves, which arranged elements in order of increasing atomic mass and observed that elements with similar properties recurred every eighth element. However, it had many limitations in its application.
- In 1869, Dmitri Mendeleev created the first successful periodic table. It arranged elements in order of increasing atomic mass but also grouped elements with similar properties together. Mendeleev left gaps for undiscovered elements and was able to accurately predict their properties.
- The modern periodic table is based on atomic number rather than atomic mass. It overcomes limitations of earlier tables and groups elements with the same number of protons, electrons, and chemical properties together
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Dmitri Mendeleev was a Russian chemist born in 1834 who created the periodic table of elements. He organized the known elements into the first recognizable periodic table based on their atomic masses and chemical properties. This allowed elements to be grouped into families with similar behaviors and left gaps for elements not yet discovered. Mendeleev won several awards for his advancements in chemistry, including the Copley Medal in 1905 and the Demidov Prize in 1862. His creation of the periodic table brought order to the study of elements and allowed scientists to predict properties of undiscovered elements.
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This document discusses the classification and properties of elements according to their position on the periodic table. It describes the three main groups of elements - metals, nonmetals, and metalloids. Metals are shiny, conductive, malleable, and lose electrons to form positive ions. Nonmetals are dull, poor conductors, brittle, and gain electrons to form negative ions. Metalloids have some properties of both metals and nonmetals. Within these groups, elements are further classified based on their specific properties, such as alkali metals being very reactive and noble gases being stable and unreactive. Hydrogen and helium are also discussed as having unique behaviors compared to other elements.
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Basics of periodic table
Dmitri Mendeleev organized the periodic table into groups and periods based on the properties of elements. Elements are categorized as metals or non-metals, with non-metals including metalloids, other nonmetals, halogens and noble gases. Metals include alkali metals, alkaline earth metals, lanthanoids, actinoids and transitional metals. The periodic table provides information on common elements like hydrogen, oxygen, and helium.
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Dmitri Mendeleev created the periodic table in 1869 while writing a chemistry textbook, noticing a pattern among the elements when arranged by atomic mass; he organized the elements into groups and rows based on their properties, with some elements later being rearranged as their atomic numbers were discovered; the periodic table was first published in an obscure Russian journal but was later more widely distributed in a German publication, systematizing the known chemical elements.
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Dmitri Mendeleev was a Russian chemist born in 1834. He studied chemistry and became a professor. He is most famous for creating the first periodic table of elements in 1869, arranging elements by atomic weight and properties. His periodic table allowed him to predict properties of undiscovered elements and is the foundation for how the elements are organized today. Mendeleev made many contributions to chemistry and was honored with awards from the Royal Society of England.
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Dmitri Mendeleev was a Russian chemist born in 1834. He studied chemistry and became a professor. He is most famous for creating the first periodic table of elements in 1869, arranging elements based on atomic weight and properties. His periodic table predicted properties of undiscovered elements and helped establish the modern organization of elements that is still used today.
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Alchemists in the Middle Ages first introduced symbols for elements, which influenced modern chemists' use of symbols for convenience. Jons Jacob Berzelius invented the current system of chemical symbols. Elements' symbols are derived from their names in Latin, English, or the scientists who discovered them. Henry Moseley's work with X-ray spectra showed that atomic number, not mass, determines an element's position in the periodic table. This led to restating the periodic law in terms of atomic number and the modern form of the periodic table.
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Dmitri Mendeleev invented the first periodic table in 1869 by arranging elements in order of increasing atomic mass. He left gaps for missing elements and correctly predicted their properties. Later, Moseley improved the table by arranging elements by atomic number. The periodic table is divided into metals, nonmetals, and metalloids. Transition elements make up groups 3-12, while groups 1-2 and 13-18 are representative elements including metals, nonmetals, and metalloids. Each element has unique physical and chemical properties based on its position in the periodic table.
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- In 1869, Dmitri Mendeleev created the first successful periodic table. It arranged elements in order of increasing atomic mass but also grouped elements with similar properties together. Mendeleev left gaps for undiscovered elements and was able to accurately predict their properties.
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Dmitri Mendeleev was a Russian chemist born in 1834 who created the periodic table of elements. He organized the known elements into the first recognizable periodic table based on their atomic masses and chemical properties. This allowed elements to be grouped into families with similar behaviors and left gaps for elements not yet discovered. Mendeleev won several awards for his advancements in chemistry, including the Copley Medal in 1905 and the Demidov Prize in 1862. His creation of the periodic table brought order to the study of elements and allowed scientists to predict properties of undiscovered elements.
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Basics of periodic table
Dmitri Mendeleev organized the periodic table into groups and periods based on the properties of elements. Elements are categorized as metals or non-metals, with non-metals including metalloids, other nonmetals, halogens and noble gases. Metals include alkali metals, alkaline earth metals, lanthanoids, actinoids and transitional metals. The periodic table provides information on common elements like hydrogen, oxygen, and helium.
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Dmitri Mendeleev is credited with creating the first periodic table of elements in 1869, arranging the elements in order of increasing atomic mass and grouping them into columns and periods based on repeating properties. The periodic table displays a periodic repetition of chemical and physical properties when elements are arranged by atomic number, with metals generally to the left and non-metals to the right.
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Dmitri Mendeleev created the periodic table in 1869 while writing a chemistry textbook, noticing a pattern among the elements when arranged by atomic mass; he organized the elements into groups and rows based on their properties, with some elements later being rearranged as their atomic numbers were discovered; the periodic table was first published in an obscure Russian journal but was later more widely distributed in a German publication, systematizing the known chemical elements.
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Matter is anything that has mass and occupies space. It is composed of small particles and can be classified as either pure substances or mixtures. Elements are the simplest pure substances, composed of only one type of atom. When two or more elements are chemically combined, they form a compound, which has different properties than the individual elements. Common compounds include water, salt, and sugar which are essential to everyday life.
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Mendeleev
Dmitri Mendeleev was a Russian chemist born in 1834. He studied chemistry and became a professor. He is most famous for creating the first periodic table of elements in 1869, arranging elements based on atomic weight and properties. His periodic table predicted properties of undiscovered elements and helped establish the modern organization of elements that is still used today.
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Development of the periodic table
Alchemists in the Middle Ages first introduced symbols for elements, which influenced modern chemists' use of symbols for convenience. Jons Jacob Berzelius invented the current system of chemical symbols. Elements' symbols are derived from their names in Latin, English, or the scientists who discovered them. Henry Moseley's work with X-ray spectra showed that atomic number, not mass, determines an element's position in the periodic table. This led to restating the periodic law in terms of atomic number and the modern form of the periodic table.
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The document provides an introduction to the periodic table. It explains that Dmitri Mendeleev discovered the periodic table and created it as a way to organize all the known chemical elements. The periodic table is organized with elements in vertical columns based on their properties and horizontal rows based on the number of outer electrons. Examples of three elements, fluorine, krypton, and rubidium are then described, including their atomic number, symbol, mass, discoverer, families, and some uses.
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Timeline of Historical Development of Atoms and Chemical Elements
Timeline of Historical Development of Atoms and Chemical Elements
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The Periodic Table
The periodic table was developed by Dimitri Mendeleev in 1869 to arrange the elements according to their chemical properties. Elements that behave similarly in chemical reactions are found in the same regions of the periodic table. The horizontal rows are called periods and elements across periods have different properties. The vertical columns are called groups, and elements within the same group have similar properties and react in similar ways. There are metals, non-metals, and semi-metals (metalloids). Noble gases are stable due to having a full outer shell, while halogens seek to gain an electron to achieve stability. The symbols for elements consist of one or two letters derived from their Latin names.
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The document provides information about the periodic table of elements and key scientists involved in its development, including:
- Dimitri Mendeleev created one of the first periodic tables by organizing element cards in logical order by atomic weight and valence, and used it to predict unknown elements.
- Henry Moseley helped reorder the periodic table according to atomic number, establishing it as the fundamental property.
- Elements in the same period have the same number of electron orbitals in their outer shell.
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The document summarizes the development of the periodic table of elements from early classifications by Dobereiner and Newlands to Mendeleev's and Meyer's published periodic tables to Moseley's establishment of the ordering by atomic number. It explains key periodic properties including atomic structure and trends in atomic size, and provides an overview of the layout and information contained in the modern periodic table.
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The document summarizes key information about the periodic table, including that there are 118 known elements as of 2010, with 94 found naturally on Earth. It describes how chemistry was disorganized before the periodic table was developed by Dmitri Mendeleev, who arranged elements in rows by atomic weight and columns by chemical properties, leaving spaces for undiscovered elements. The current periodic table arranges elements by atomic number in rows called periods and columns called groups, which have similar properties based on their valence electrons. Key groups described include alkali metals, alkaline earth metals, transition metals, and noble gases.
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The document discusses the key elements of the periodic table including atomic number, atomic mass, and how elements are arranged. It summarizes the contributions of Dmitri Mendeleev and Henry Moseley. Mendeleev arranged elements based on atomic mass and left gaps for undiscovered elements. Moseley discovered that atomic number is fundamental. The periodic table is arranged into periods and groups with metals, nonmetals and metalloids. Different groups of elements are discussed including alkali metals, alkaline earth metals, halogens, and noble gases. Examples are given of elements and their properties.
Ch.10 L 1 using the periodic table.pptx
The document traces the development of the periodic table from early lists of elements compiled by scientists like Lavoisier to Mendeleev's groundbreaking periodic table that included predictive properties. It organized elements by atomic mass and left gaps for undiscovered elements, correctly predicting properties of three. Moseley later reorganized the table by atomic number, establishing the modern periodic table's clear periodic trends when arranged by this property. The document also outlines key properties of metals, nonmetals, and metalloids and how they are grouped on the periodic table.
The periodic table notes
Dmitri Mendeleev created the first periodic table in 1869 by organizing the known 63 elements based on their properties. He noticed patterns that allowed him to predict properties of undiscovered elements. The modern periodic table is arranged by atomic number with periods in horizontal rows and groups in vertical columns. It contains 117 known elements and illustrates patterns in their properties based on atomic structure.
The periodic table
The document summarizes key aspects of the periodic table. It describes the table's organization into columns (families) and rows (periods), and how elements in the same family have similar properties and reactivity decreases moving right and down. It then highlights several important families - alkali and alkaline earth metals, which are reactive; transition elements; and noble gases. The document also defines properties of metals and non-metals, as well as metalloids.
Learning_The_Periodic_Table.ppt
Here are some common elements we use every day:
- Carbon - found in pencils, food, plastics
- Oxygen - we breathe it
- Hydrogen - found in water
- Nitrogen - in the air we breathe
- Calcium - in our bones and teeth
- Sodium - in salt
- Chlorine - in drinking water and swimming pools
- Aluminum - used in cans and foil
- Copper - in wiring and plumbing
- Iron - in foods and construction materials
- Zinc - in galvanization and supplements
- Iodine - added to salt for thyroid health
Learning_The_Periodic_Table.pptggggggggggggggggg
Here are some common elements we use every day:
- Carbon - found in pencils, food, plastics
- Oxygen - we breathe it
- Hydrogen - found in water
- Nitrogen - in the air we breathe
- Calcium - in our bones and teeth
- Sodium - in salt
- Chlorine - in drinking water and swimming pools
- Aluminum - used in cans and foil
- Copper - in wiring and plumbing
- Iron - in foods and construction materials
- Zinc - in galvanization and supplements
- Iodine - added to salt for thyroid health
Learning_The_Periodic_Table.ppt
Here are some common elements we use every day:
- Carbon - found in pencils, food, plastics
- Oxygen - we breathe it
- Hydrogen - found in water
- Nitrogen - in the air we breathe
- Calcium - in our bones and teeth
- Sodium - in salt
- Chlorine - in drinking water and swimming pools
- Aluminum - used in cans and foil
- Copper - in wiring and plumbing
- Iron - in foods and construction materials
- Zinc - in galvanization and supplements
- Iodine - added to salt for thyroid health
Atomic Number.pptSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS...
Here are some common elements we use every day:
- Carbon - found in pencil lead, food, and our bodies
- Oxygen - we breathe it
- Hydrogen - found in water
- Nitrogen - makes up most of the air we breathe
- Calcium - found in bones and milk
- Sodium - found in salt
- Chlorine - used to purify water
- Aluminum - used in cans and foil
- Copper - used in wiring and plumbing
- Iron - found in many foods and our blood
- Zinc - supports immune function and found in ointments
- Iodine - essential for thyroid function and added to salt
Grade 9, U1-L8-Periodic table
The document summarizes key aspects of the periodic table. It describes how the periodic table is organized into horizontal rows called periods and vertical columns called families or groups. Elements within the same group have similar physical and chemical properties. Metals are found on the left and center of the periodic table and have properties like conductivity and malleability. Non-metals are on the right and have varying properties, often gaining electrons in reactions. Metalloids between metals and non-metals have intermediate properties. Different families like alkali metals, halogens, and noble gases are also described in terms of their physical properties and reactivity.
Similar to English Class: The Periodic Table (20)
Science 8 Quarter 3 WEEK7 Periodic Table of Elements.pptx
Science 8 Quarter 3 WEEK7 Periodic Table of Elements.pptx
Atomic Number.pptSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS...
Atomic Number.pptSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS...
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Deep Software Variability and Frictionless Reproducibility
Deep Software Variability and Frictionless ReproducibilityUniversity of Rennes, INSA Rennes, Inria/IRISA, CNRS
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
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Exposé invité Journées Nationales du GDR GPL 2024
The binding of cosmological structures by massless topological defects
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原版纸张【微信：741003700 】【(carleton毕业证书)卡尔顿大学毕业证】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
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https://ashpc.eu/
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EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
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s
−1
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massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
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Equivariant neural networks and representation theory
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
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English Class: The Periodic Table
- 1. THE PERIODIC TABLE CRISTIAN OSPINA TÉLLEZ UNIVERSITY OF TOLIMA ENGLISH III
- 2. WHY IS THE PERIODIC TABLE IMPORTANT? • The periodic table is the most useful tool to a chemist. • You get to use it on every test. • It organizes lots of information about all the known elements.
- 3. DIMITRI MENDELEIEV: FATHER OF THE TABLE Put elements in rows by increasing atomic weight. • Put elements in columns by the way they reacted. SOME PROBLEMS… • He left blank spaces for what he said were undiscovered elements. (Turned out he was right!)
- 5. FAMILIES ON THE PERIODIC TABLE • Columns are also grouped into families. • Families may be one column, or several columns put together. • Families have names rather than numbers.
- 6. HYDROGEN • Hydrogen belongs to a family of its own. • Hydrogen is a diatomic, reactive gas. • Hydrogen was involved in the explosion of the Hindenberg. • Hydrogen is promising as an alternative fuel source for automobiles
- 7. ALKALI METALS • 1st column on the periodic table (Group 1) not including hydrogen. • Very reactive metals, always combined with something else in nature (like in salt).
- 8. ALKALINE EARTH METALS • Second column on the periodic table. (Group 2) • Reactive metals that are always combined with nonmetals in nature.
- 9. TRANSITION METALS • Elements in groups 3-12 • Less reactive harder metals • Includes metals used in jewelry and construction.
- 10. BORON FAMILY • Elements in group 13 • Aluminum metal was once rare and expensive, not a “disposable metal.”
- 11. CARBON FAMILY • Elements in group 14 • Contains elements important to life and computers. • Carbon is the basis for an entire branch of chemistry. • Silicon and Germanium are important semiconductors.
- 12. NITROGEN FAMILY • Elements in group 15 • Nitrogen and phosphorus are both important in living things. • Most of the world’s nitrogen is not available to living things.
- 13. OXYGEN FAMILY • Elements in group 16 • Oxygen is necessary for respiration. • Many things that stink, contain sulfur (rotten eggs, garlic, skunks,etc.)
- 14. HALOGENS • Elements in group 17 • Very reactive, volatile, diatomic, nonmetals • Always found combined with other element in nature .
- 15. THE NOBLE GASES • Elements in group 18 • VERY unreactive, monatomic gases • Used in lighted “neon” signs
- 16. THE RARE EARTH ELEMENTS • The 30 rare earth elements are composed of the Lanthanide and Actinide Series.