Homework 7: 9/20 - 9/24

When a substance melts, the kinetic energy _____________.

• decreases
• stays the same
• increases
• decreases then increases

What is the energy that an object has because it is moving?

• kinetic
• potential
• electric
• wind

What takes place when a liquid changes to a gas?

• condensation
• melting
• evaporation
• freezing

What takes place when a solid changes to a liquid?

• condensation
• melting
• evaporation
• freezing

What takes place when a liquid changes to a solid?

• condensation
• melting
• evaporation
• freezing

What takes place when a gas changes to a liquid?

• melting
• freezing
• evaporation
• condensation

Change from Gas to Solid is called........

• Sublimation
• Deposition
• Fusion
• condensation

What is sublimation?

• phase change between solid and liquid
• pahse change from gas to solid
• phase change from solid to gas
• phase change from solid to solid

During a phase change what happens to temperature?

• it increases
• it decreases
• depends; if being heated it increases, if being cooled it decreases
• stays constant

All changes in the state of matter of a substance requires a change in 

• mass
• temperature
• permission
• energy