1. Chapter 10 Lesson 1 How Matter Can Change
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2. Please share with a partner.
Please Do Now!
Think about a time when you experienced some kind of change. In the margin of you paper, please write a brief description about it.
Please share with a partner.

3. A change that begins and ends with the same kind of matter is a physical change.

4. A physical change can be caused by cutting, crushing, tearing, bending, or stretching matter.

5. When the surface of a lake freezes and becomes solid, the water beneath the ice is still a liquid.

6. Some signs of a physical change are changes in size, shape, or position.

7. When matter changes from one form to another, such as from a solid to a liquid, it goes through a change of state.

8. A change of state is caused by heat (or energy).

9. The Sun’s energy can change a liquid to a gas during a process called evaporation.

10. A change that produces new matter is a chemical change.
Give an example of a chemical change.

11. A chemical change is also known as a chemical reaction.

12. A chemical change either gives off or uses energy.

13. Energy in a chemical change can be in the form of heat, light, or electricity.

14. Some of the characteristics of a chemical change are the release of a gas or a change in color or smell.

15. Reshaping dough is a physical change, but baking it is a chemical change.

16. Exit Question
Do you think you would identify a change in texture as a chemical change or a physical change?