Properties of Matter 2.1 Matter has observable properties. 2.2 CHAPTER NEW CHAPTER Properties of Matter the BIG idea Matter has properties that can be changed by physical and chemical processes. 2.1 Matter has observable properties. 2.2 Changes of state are physical changes. 2.3 Properties are used to identify substances. CHAPTER OUTLINE CHAPTER RESOURCES

Matter has observable properties. 2.1 Matter has observable properties. • Physical properties can be observed without changing the substance. physical property • Physical changes can change some physical properties but do not change the substance. density physical change chemical property chemical change CHAPTER RESOURCES SECTION OUTLINE

Matter has observable properties. 2.1 Matter has observable properties. • Physical properties can be observed without changing the substance. physical property • Physical changes can change some physical properties but do not change the substance. density physical change • Chemical properties describe how substances form new substances. chemical property • Chemical changes create new substances. chemical change VISUALIZATION See how materials can go through physical and chemical changes. CHAPTER RESOURCES SECTION OUTLINE

Changes of states are physical changes. 2.2 Changes of states are physical changes. Matter is commonly found in three states: solid, liquid, and gas. melting melting point freezing freezing freezing point Solid Liquid evaporation melting sublimation boiling condensation boiling point condensation Liquid Gas CHAPTER RESOURCES evaporation, boiling SECTION OUTLINE

Properties are used to identify substances. 2.3 Properties are used to identify substances. Physical properties that can be used to identify substances include: • density • heating properties • solubility • electric properties • magnetic properties CHAPTER RESOURCES Mixtures can be separated by using the properties of the substances they contain. SECTION OUTLINE

2.1 Matter has observable properties. I. Matter has observable properties. physical property A. Physical properties describe a substance. density 1. Physical Properties physical change 2. Density chemical property 3. Physical Changes chemical change B. Chemical properties describe how substances form new substances. 1. Chemical Properties and Changes 2. Signs of a Chemical Change CHAPTER RESOURCES KEY CONCEPT SUMMARY

Changes of states are physical changes. 2.2 Changes of states are physical changes. II. Changes of states are physical changes. melting A. Matter can change from one state to another. melting point B. Solids can become liquids, and liquids can become solids. freezing freezing point 1. Melting evaporation 2. Freezing sublimation C. Liquids can become gases, and gases can become liquids. boiling boiling point 1. Evaporation condensation 2. Boiling CHAPTER RESOURCES 3. Condensation KEY CONCEPT SUMMARY

Properties are used to identify substances. 2.3 Properties are used to identify substances. III. Properties are used to identify substances. A. Substances have characteristic properties. 1. Identifying Unknown Substances 2. Properties Used for Identifying Substances B. Mixtures can be separated by using the properties of the substances in them. CHAPTER RESOURCES KEY CONCEPT SUMMARY

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