1. State of matter changing to another
Bell work
1. List the 3 states of matter.
2. What is a phase change?
Solid
Liquid
Gas
State of matter changing to another

2. SOLIDS

3. 3. SOLID A solid is matter that has definite volume and shape.
Example: Put a sneaker in a box. It stays the same.

4. Liquids

5. LIQUID
4. A liquid takes the shape of any container. It has definite volume and indefinite shape.
Example: Pour juice into a glass. What happens? It takes the shape of the glass.

6. GAS

7. Gas
5. Gas is matter that has indefinite shape and volume. Gases take the shape of whatever container they are in .
Example: The air all around us is a gas.

8. 6. A phase change is a change in state (solid, liquid, or gas)
Melting – solid to liquid
Freezing – liquid to solid
Evaporation – liquid to gas
Condensation – gas to liquid
Sublimation – solid to gas
Deposition – gas to solid

9. Physical changes in matter
7. A Physical change is a change in how matter looks, but not the kind of matter is it is.
Tear
Cut
Folded
Liquid
Solid
Gas
Mixture

10. PHYSICAL CHANGES

11. Chemical changes in matter
8. In a chemical change, new matter is formed.
Burning
Rusting
Cooking

12. CHEMICAL CHANGES

13. Let’s watch a video clip about matter!
States of Matter
Click to go to the next slide.

14. Is this a solid, a liquid, or a gas
Is this a solid, a liquid, or a gas? Can you find more than one type of matter in any of the pictures?

15. Is this a physical change or a chemical change
Is this a physical change or a chemical change? Can you find more than one physical or chemical change in the pictures?

16. Temperature
12. Temperature is the measurement of how fast the particles are moving. Remember: Not all substance freeze, melt or evaporate at the same temperature.
Water will freeze at zero degrees Celsius. However Alcohol will not freeze at this temperature.
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17. Pressure
13. Pressure is defined as the force the gas exerts on a given area of the container.
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18. 14. Gas Laws - Boyle’s Law
Charles Boyle determined that for the same amount of a gas without changing the temperature, if we increase the volume, the pressure goes down.
pressure
volume
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19. Boyle’s Law at Work…
Doubling the pressure reduces the volume by half. Conversely, when the volume doubles, the pressure decreases by half.
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20. 15. Charles’ Law
Jacques Charles found that as the volume increases the temperature also increases. If the temperature decreases than the volume also decreases.
volume
temperature
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21. Charles’ Law at Work…
As the temperature increases, the volume increases. Conversely, when the temperature decreases, volume decreases.
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