Science Unit 1 Assessment

Solids are made of matter. Gases are made of space.

• True

• False

All solids, liquids, and gases are made of tiny particles.

• True

• False

The particles in gases are farther apart than the particles in liquids or solids.

• True

• False

Gases take the shape of the container they are in.

• True

• False

When a solid melts and becomes a liquid, what kind of change occurred?

• A. Physical change

• B. Chemical change

When heat energy is added to a liquid, what happens?

• It evaporates and becomes a gas.

• It freezes and becomes solid.

What happens when heat energy is removed from a gas?

• It melts and becomes a liquid.

• It condenses and becomes a liquid.

This image shows an electronic scale. What is it used to measure?

• The length of a substance

• The weight of a substance

Jane mixes 50 g of salt with 50 g of sand.

How much will this mixture weigh?

• 200 g

• 100 g

• 50 g

Imagine that you have mixed two different materials together. How do you know if a chemical reaction happened?

• I see bubbles, temperature change, and/or color change.

• I see a change in overall weight.

• I see a change in state.