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Number 1-4. Describe what is happening with the energy levels in the water cycle and any phase changes snow 1. 2. 3. 4. Liquid to Gas Add energy Gas to.

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Presentation on theme: "Number 1-4. Describe what is happening with the energy levels in the water cycle and any phase changes snow 1. 2. 3. 4. Liquid to Gas Add energy Gas to."— Presentation transcript:

1 Number 1-4. Describe what is happening with the energy levels in the water cycle and any phase changes snow Liquid to Gas Add energy Gas to liquid Release energy Liquid to solid Release energy Solid to liquid Add energy

2 Gas Laws

3 Properties of Gases Gases have no definite volume or shape Gas particles move rapidly in all directions Gases are fluids Gas molecules are in constant motion and frequently collide with their surroundings Gases have low density because their molecules are so spread out Gases are compressible Gases spread out easily and mix with one another readily

4 3 Gas Laws Boyles Law – pressure and volume Charless Law – temperature and volume Gay-Lussacs Law – pressure and temperature

5 Boyles Law Relationship between gas pressure and volume Temperature stays constant For a fixed amount of gas at a constant temperature, the volume of gas increases as its pressure decreases. (pressure 1 )(volume 1 ) = (pressure 2 )(volume 2 ) volume : Pressure

6

7 Charless Law Relationship between temperature and volume Fixed amount of gas Constant pressure For a fixed amount of gas at a constant pressure, the volume of the gas increases as temperature increases temperature: volume

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9 Gay-Lussacs Law Relationship between volume and temperature Constant pressure For a fixed volume of gas as temperature increases pressure increases temperature: pressure

10

11 Homework Due Wednesday Chapter 3 Review Pages 94 – 95 Numbers 1 – 24 On separate paper to be turned in and graded


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