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Physical and Chemical Changes 2.4.1, 2.4.2 Objectives 2.4.1 Identify examples of physical changes and provide support that a physical change is taking place. 2.4.2 Identify examples of chemical changes and provide support that a chemical change is taking place. Physical Changes KP1 Physical change does NOT result in the creation of a new substance. All substances involved retain their properties. Physical Change KP2 Physical changes include cutting, tearing, folding, shredding, boiling, melting, evaporating, condensing, and dissolving. Physical Change KP3 Changes in the states of matter are PHYSICAL changes. Chemical Change KP1 Chemical change results in the creation of one or more NEW substances, with new chemical properties. Chemical Change KP2 Evidence that a chemical change has occurred includes a permanent change in color, release of a gas (bubbles), scent, light, or change in temperature. Chemical Change KP3 Chemical Reaction = Chemical Change Examples of Physical Change Evidence of Chemical Change We Do Venn Diagram You Do Together Stations You Do Alone 1. Read pages 330 - 338 2. Answer questions 9-19 on a blank sheet. 3. When finished, put sheet behind “Classwork” Exit Ticket 1. Which is a characteristic of all chemical changes? a. a different state of matter is produced b. some mass is converted to energy c. some form of light is given off d. a new material is formed 2. Which activity is an example of a chemical change? a. Dissolving table salt in water b. Hammering aluminum into thin sheets c. Melting gold to make jewelry d. Burning wood to produce ashes 3. a. b. c. d. Which is an example of a physical change? Boiling Burning Rotting Rusting 4. Mark mixed a powder and a liquid together in a test tube. As he watched, the mixture began to bubble, and gas was released. Which of the following is most likely true? a. The liquid made the powder evaporate. b. The powder made the liquid change to a solid. c. The powder and the liquid reacted chemically. d. The powder and the liquid could not mix. 5. When a candle is lit, the wick burns, the wax melts, the candle changes shape, and the air around the candle heats up. Which of the following is an example of a chemical change? A. The wick burning B. The wax melting C. The candle changing shape D. The air around the candle heating up.