Endothermic Exothermic Phase Changes

Endothermic reactions

• absorb heat

• release heat

Exothermic reactions

• absorb heat

• release heat

In the phase change of melting, do particles move faster or slower?

• Faster

• Slower

In the phase change of melting, is this endothermic or exothermic?

• Endothermic

• Exothermic

Dry ice is an example of....

• melting

• sublimation

• deposition

• freezing

Condensation is....

• Gas to liquid

• Liquid to gas

• Gas to solid

• Liquid to solid

Sublimation is...

• Solid to gas

• Gas to solid

• Solid to liquid

What happens when you put a balloon in a freezer?

• It gets bigger

• It gets smaller

• It pops

When something increases temperature, the speed of the particles

• Increase

• Decrease

• Stay the same

Heat of fusion is...

• The amount of energy needed to change a liquid to a gas

• The amount of energy needed to change a solid to a liquid

• The amount of energy needed to change a solid to a gas