Unit 2: Matter

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a liquid turns into a gas.

Front

What is the melting point of a substance?

Back

The melting point is the temperature at which a solid turns into a liquid.

Front

What happens to the particles of a substance when it is heated?

Back

When heated, the particles gain energy and move faster, often leading to a change in state.

Front

What is condensation?

Back

Condensation is the process where water vapor turns into liquid water.

Front

What is evaporation?

Back

Evaporation is the process where liquid water turns into water vapor.

Front

What is a chemical change?

Back

A chemical change occurs when a substance transforms into a different substance with new properties.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is heat energy?

Back

Heat energy is the energy that comes from the temperature of matter; it is the energy that causes the particles in a substance to move.