Chapter 10 Lesson 1 How Matter Can Change Pgs. 252-259

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.

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

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

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

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

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

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

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

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

A chemical change is also known as a chemical reaction.

A chemical change either gives off or uses energy.

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

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

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

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