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

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

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

Gas Laws

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

3 Gas Laws Boyle’s Law – pressure and volume
Charles’s Law – temperature and volume Gay-Lussac’s Law – pressure and temperature

Boyle’s Law volume : Pressure
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. (pressure1)(volume1) = (pressure2)(volume2) volume : Pressure

Charles’s Law temperature: volume
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

temperature: pressure
Gay-Lussac’s Law Relationship between volume and temperature Constant pressure For a fixed volume of gas as temperature increases pressure increases temperature: pressure

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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