States of matter

Liquid water turning into an ice cube is an example of.....

• melting
• freezing
• condensing
• evaporating

When water beads on the outside of a cold glass of water.

• vaperization
• condensation
• melting
• freezing 

When a solid changes straight to a gas.

• condensation

• sublimation

• deposition

• freezing

Which is NOT an example of condensation?

• dew collecting on the grass in the morning

• clouds filling with water vapor

• water forming on the side of the glass of ice water

• an oasis drying up in the desert

In order for something to melt...

• the objects temperature needs to be lowered

• the molecules slow down to a "stand still"

• you turn the air conditioner on

• it requires the object's melting point to be reached

What happens to a substance with an increase in temperature?

• it gains energy

• it loses energy

• its energy stays the same

Diffusion occurs only in solids

• True

• False

How does an increase in temperature affect diffusion?

• Diffusion speeds it up

• Diffusion slows it down

• Diffusion has no effect

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

A student makes an observation using a microscope. He observed some particles which were moving in a zig-zag way. What particles could these NOT be?

• Smoke particles in air

• Dust particles in a room

• Pollen grains in water

• Molecules in a solid bar of steel