Lecture 1&2
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1. Chemistry is the study of matter and its properties, composition, structure and the changes it undergoes. 2. Matter exists in three physical forms - solid, liquid and gas - depending on conditions like temperature and pressure. 3. Elements and compounds are the two main categories of pure substances, while mixtures can be either homogeneous or heterogeneous.
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Classificationofmatter notes
1. Matter is classified as either pure substances or mixtures. Pure substances are uniform and consist of elements or compounds, while mixtures contain two or more substances mixed together.
2. Elements are the simplest pure substances made of only one type of atom, while compounds are formed by chemical bonds between different atoms in specific ratios.
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The document discusses the key concepts of matter and materials. It defines matter as anything that has mass and takes up space. Matter exists in three states - solid, liquid, and gas. Solids have a definite shape and volume, liquids take the shape of their container but have a definite volume, and gases fill their container. Chemical and physical changes that can transform matter between these states are also explained. The document provides examples of different types of materials and their characteristics.
Matter and materials 2
1. Matter is everything that has mass and takes up space, and is composed of atoms. There are three main states of matter: solids, liquids, and gases.
2. Solids have a definite shape and volume, with molecules close together. Liquids take the shape of their container but maintain a constant volume. Gases fill their container and have no definite shape or volume.
3. Physical properties can be observed without changing the identity of the substance, such as density, melting point, and boiling point. Changes in state are physical changes. Chemical changes alter the chemical composition.
Matter
Matter can exist in different states and undergo physical or chemical changes. Physical changes alter a substance's state without changing its chemical makeup, while chemical changes form new substances. Properties like density and melting point can be used to identify pure substances and distinguish them from mixtures of multiple components.
Matter
Matter exists in various states and undergoes physical and chemical changes. Physical changes alter a substance's state without changing its chemical makeup, while chemical changes form new substances. Substances have consistent compositions and properties, whereas mixtures are combinations of substances that can be separated. Common states of matter include solids, liquids, and gases.
Ch 2 Pre Ap Matter
Matter exists in various states including solid, liquid, and gas. Physical changes alter the state of matter without changing its chemical composition, while chemical changes form new substances. Properties such as density and melting point can be used to identify substances and determine if a change is physical or chemical.
Good Presentation
The document discusses various topics related to matter and chemical changes. It defines elements and compounds, explains that compounds can undergo chemical changes while elements cannot, and states that the law of conservation of mass means the mass of reactants equals the mass of products in a chemical reaction. It also distinguishes physical and chemical changes, noting that only chemical changes alter the composition of matter.
All Chem Notes 1 9
This document provides an introduction to chemistry and the scientific method. It discusses chemistry as a science for the 21st century and how it relates to areas like health, energy, materials, food and more. The document then covers topics like the study of chemistry on both the microscopic and macroscopic levels, the scientific method, atomic theory, classification of matter, states of matter, mixtures and pure substances including elements and compounds. It also discusses physical and chemical properties and changes.
General Chemistry.pptx
This document provides an introduction to general chemistry. It defines chemistry as the study of matter and its transformations. Matter is anything that has mass and occupies space, and can exist in different states such as solid, liquid, gas, and plasma. The document discusses physical and chemical properties of matter, as well as physical and chemical changes. It classifies matter as either pure substances like elements and compounds, or mixtures that are either homogeneous or heterogeneous. The key concepts covered include the states of matter, phase changes, and the classification of matter.
Is Matter Around us Pure
This chemistry document outlines learning objectives and content for a Grade 9 chemistry unit on matter and mixtures. The key learning objectives are for students to be able to classify matter, distinguish between pure substances and mixtures, understand different types of mixtures and separation techniques, and demonstrate physical and chemical changes. The document provides explanations of pure substances, elements, compounds, mixtures and different types of mixtures. It also describes various separation techniques including evaporation, filtration, sublimation, centrifugation and chromatography.
PROPERTIES OF MATTER.pdf
The document discusses the key properties and states of matter. It defines matter as anything that has mass and takes up space, and identifies three common states of matter - solids, liquids, and gases. It distinguishes between physical and chemical properties, and physical and chemical changes. The document also covers mixtures and solutions, the conservation of mass, and provides an example problem calculating the mass of a product in a chemical reaction.
propertiesofmatterppt-121213121212-phpapp02 (1).pdf
This document defines the key properties and states of matter. It discusses the three main states of matter - solids, liquids, and gases - and how they differ in terms of definite volume and shape. It also defines other states like plasma and vapor. The document outlines the six phase changes that occur between the different states of matter and distinguishes between physical and chemical changes. Finally, it categorizes the three main types of matter - elements, compounds, and mixtures - and their characteristics.
Matter and change
The document discusses the key properties and characteristics of matter. It defines matter as anything that has mass and takes up space. It describes the three main states of matter - solids, liquids, and gases - and their properties. It also discusses physical and chemical properties, mixtures and compounds, and how chemical and physical changes can alter matter.
Matter
All matter can undergo physical and chemical changes. A physical change alters the appearance but not the chemical composition, such as water freezing. A chemical change forms new substances with different properties, like reactions with acids or bases. Substances have characteristic intensive properties that identify them and extensive properties that depend on amount.
Cells
This document provides information about the three states of matter: solids, liquids, and gases. It defines each state, provides examples, and discusses physical and chemical changes. Users can learn about each state through short sections and then test their knowledge with a multiple choice quiz at the end.
TAKS Review Ppt Objective 4
The document discusses various properties of matter and chemical changes. It provides information on:
1) Density being a ratio and not dependent on size. Ice having a lower density than water and therefore floating.
2) Buoyancy causing less dense substances to float in more dense liquids. Boats being made of lower density materials than water.
3) Viscosity being the resistance to flow, with cold syrup having a higher viscosity than warm syrup due to particle interactions.
Describing matter powerpoint
Matter can exist in three states - solid, liquid, and gas. Examples of solids are ice and diamonds; examples of liquids are water and mercury. Gases include water vapor and oxygen. Characteristic properties like boiling point and melting point are used to identify substances and do not change, even if the substance changes state. Physical changes alter the substance's form through processes like melting or crushing, but do not change its chemical makeup. Chemical changes form new substances through chemical reactions.
Matter
The document summarizes key concepts about matter including:
1. Matter can exist in different physical states such as solids, liquids, and gases which are determined by factors like the strength of attractive forces between particles and their ability to be compressed.
2. Pure substances have a uniform composition throughout while mixtures contain two or more substances and can be either homogeneous or heterogeneous.
3. Elements are substances that cannot be broken down further while compounds contain two or more elements combined in fixed ratios.
4. Metals, nonmetals, and metalloids have distinct physical and chemical properties depending on their position on the periodic table.
Chem0150f10ch3a(2)
This document provides an overview of general chemistry concepts including:
1) Chemistry is the study of matter and its properties at both the macroscopic and microscopic levels.
2) Matter is anything that has mass and volume, and can be classified according to its physical and chemical properties.
3) Physical and chemical properties allow matter to be distinguished, and physical and chemical changes can be identified.
Matter II
The document discusses different states of matter and types of changes that matter can undergo. It explains that matter exists as solids, liquids, or gases, and that physical changes alter a substance's state or shape without changing its chemical makeup. Chemical changes, by contrast, create new substances with different chemical properties. The document also defines mixtures as combinations of two or more materials that can be either homogeneous, where the components can't be seen, or heterogeneous, where they can. Common separation methods are described.
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Lecture 1&2
- 1. Md. Faysal Ahamed Khan Welcome to the class of Chemistry I Course No. CHEM 211 Credit hours 3
- 4. Chemistry is the study of the properties, composition , and structure of matter , the physical and chemical changes it undergoes, and the energy associated (liberated or Absorbed) during those changes.
- 8. EOS
- 13. Air sugar in water Water Salt Gold Salad
- 14. Can it be separated by any physical process? Is the composition uniform? Can it be decomposed chemically? Matter Mixtures Pure substances yes No yes No yes No Homogeneous mixture (Solution) Heterogeneous mixture Compounds Elements
- 15. Matter Substances Mixtures Elements Compounds Homogeneous (Solutions) Heterogeneous
- 17. Uniform Not uniform Homogenous Mixtures Heterogeneous Mixtures Air sugar in water Salad
- 18. Now... Those that can’t be separated are Pure Substances Bur are they Compounds or Elements ? Water Salt Gold
- 19. Which can be decomposed by chemical means, like heating, electricity...and which cannot? Compounds Elements Water Salt Gold
- 21. GAS LIQUID SOLID Water as example
- 23. STATES OF MATTER Shape Volume Gas indefinite indefinite Liquid indefinite definite Solid definite definite
- 24. A one- or two-lettered designation derived from the name of the element Most symbols are based on English names: Hydrogen = H Neon = Ne Chromium = Cr EOS Note that the first letter is always capitalized and the second is lowercase
- 25. In some cases, symbols come from Latin names
Editor's Notes
- This is the out look of my presentation. Start of the lecture: Good Morning students. This is …….from Bangladesh. I will be teaching Chemistry I to you for this semester. Why do you think you have to study Chemistry? ………………………………………………………………………………………………………………………………………………………… .. Now, What is Chemistry?