phase changes

Melting is ...

• liquid to solid
• solid to liquid
• solid to gas
• gas to liquid

Boiling is ...

• liquid to gas
• gas to solid
• gas to liquid
• solid to liquid

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

change from liquid to gas is called....

• expansion
• evaporation
• condensation
• sublimation

Change from Liquid to Solid is call......

• fusion
• Freezing
• sublimation
• evaporation

A substance's heating curve is shown in the graph. What is its boiling point? (Diagram B)

• 100 C

• 60 C

• 80 C

• 20 C

Which of the following describes a solid?

• No definite shape or definite volume, lowest intermolecular forces

• Definite volume, takes the shape of its container, no definite shape

• Definite shape and definite volume, vibrates in place and highest intermolecular forces

• Highest Kinetic Energy

Letter "C" represents which state of matter on the phase change diagram shown.

• Solid

• Liquid

• Gas

Is energy being added or removed in the following phase change diagram?

• energy is being added

• energy is being removed

Letter "B" represents which phase change on the phase change diagram shown.

• melting

• freezing

• boiling (vaporization)

• condensation