3.3 phase changes what are six common phase changes?

3.3 Phase Changes1. What are six common phase changes?2. What happens to a substance’s

temperature and a system’s energy during a phase change?

3. How does the arrangement of water molecules change during melting and freezing?

4. How are evaporation and boiling different?

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3.3 Phase ChangesCharacteristics of Phase

ChangesA. One way to recognize a phase change is by measuring the temperature of the substance.B. Temperature DOES NOT change during a phase change.

http://www.splung.com/heat/images/latentheat/phasechange.png

3.3 Phase ChangesC. Energy is either absorbed or released during a phase change.1. Endothermic change-

energy is absorbedfrom its

surroundings.2. Exothermic change-

energy is released to

the surroundings.

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3.3 Phase Changes

Gas

Solid Liquid

3.3 Phase Changes

Gas

Solid Liquid

3.3 Phase Changes

Gas

Solid Liquid

3.2 Changes of Matter

Gas

Solid Liquid

3.2 Changes of Matter

Gas

Solid Liquid

3.2 Changes of Matter

Gas

Solid Liquid

3.3 Phase Changes

Gas

Solid Liquid

3.3 Phase Changes

Heat Energy

Tem

pera

ture

3.3 Phase ChangesAssignment: