Solids Liquids Gas and Density

Which state of matter has particles that are tightly packed?

• liquid
• gas
• solid

Ice is an example of a ....

• gas
• solid
• liquid

How are the molecules arranged in a solid?

• Tightly close together
• Loosely
  All over the place
• All over
  There are none

When solid particles gain energy, vibrate faster and break free from their fixed position, this is: 

• freezing
• condensation
• melting

What process takes place when a puddle of water dries up on a sidewalk?

• melting
• freezing
• condensation
• evaporation

When a gas changes to a liquid, it .......

• Boils
• Condenses
• Melts
• Sublimes

Which of these statements about solids is true?

• They can be compressed easily
• They do not flow
• They have no definite volume
• They take the shape of their container

A balloon is filled with gas. Inside the balloon the gas particles .......

• Are avoiding each other
• Are moving slowly
• Are moving very quickly
• Are not moving

The state of matter which has very low density is .......

• Gas
• Liquid
• Solid
• Solution

True or false. All solids have a closely packed, fixed arrangement of molecules?

• true
• false