States of matter and phase changes

The level of Mercury inside of a thermometer rises when placed in hot water. Why does the level of liquid rise?

• Heat molecules push the molecules of the liquid downward.

• Heat causes the molecules of the liquid to get farther apart.

• The molecules of the liquid break down into atoms and take up more space.

• Water molecules are pushed into the thermometer.

Which state of matter is described below?

1. Particles are packed closely together

2. Particles vibrate

3. Strong molecular attraction between particles

• solid

• liquid

• gas

• plasma

What state of matter is this?

• solid

• liquid

• gas

This state of matter has a firm, unchanging physical structure.

• Solid

• Liquid

• Gas

• Plasma

Molecules change position easily and slide past one another.

• Solid
• Liquid
• Gas

The energy an object has due to its motion.

• thermal energy

• temperature

• kinetic energy

Which form of matter take the shape of a container like this juice?

• liquid
• solid
• glass
• gas

Consider the diagrams representing particle arrangements. Which correctly matches the diagrams with the three phases of matter?

• A, gas; B, liquid; C, solid

• A, gas; B, solid; C, liquid

• A, solid; B, liquid; C, gas

• D, solid; B, gas; C, liquid

The three states of matter are different. However, liquids and gases do have some things in common. One of these is ____.

• the liquids and gases are both more dense than solids

• the liquids and gases both take the shape of their container

• that liquids and gases have the same densities as solids

• that liquids and gases do not take the shape of their container

Atoms or molecules in this phase of matter have the highest energy.

• Solid

• Liquid

• Gas

• Plasma