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

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

4. 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.

5. 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

6. 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?

7. States of Matter Particle View
7. Particles of a solid are arranged in a tight, regular pattern and move very little.
8. Particles of a liquid move past one another slowly. They are close together, but not in a neat, even arrangement as the particles in a solid are.
The particles of a gas move rapidly and there is much space between the particles.

8. Heating curve gas evaporation condensation liquid melting freezing
solid
sublimation
deposition

9. 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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10. Pressure
13. Pressure is defined as the force the gas exerts on a given area of the container.
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11. 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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12. 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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