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Physical and Chemical Changes in Matter

Explore the differences between physical and chemical changes in matter with examples and characteristics. Learn how to identify these changes and their impact on the properties of substances. Visit the lab to perform experiments. Enhance your knowledge of states of matter and transformation processes.

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Physical and Chemical Changes in Matter

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  1. Physical and Chemical Change

  2. Physical change • Physical change— a change in the way matter looks. • No new matter is created. • Alters a matter’s appearance without changing the matter. • Can affect the size, shape, and state of matter. • The matter stays the same. • Can often be reversed.

  3. States of matter can change in a physical change • http://www.harcourtschool.com/activity/states_of_matter/

  4. Examples • Breaking glass • Melting ice • Cutting paper

  5. More examples • Sawing wood • Evaporating puddle • Freezing juice

  6. Chemical Change • Chemical change— a change in matter in which one or more new substances are created. • A new matter is made. • Difficult to reverse.

  7. How do I know a chemical change has happened? • Color change • Smell

  8. How do I know a chemical change has happened? • New matter created • Gas created • Heat or light created

  9. Examples • Toast burning • Rocket fuel burning • Metal rusting

  10. More examples • Cake baking • Leaves changing color • Rotting bananans

  11. Chemical and Physical Change Lab • http://vital.cs.ohiou.edu/steamwebsite/downloads/ChangeLab.swf

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