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

Solid, liquid, gas.

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 a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Give an example of a physical change.

Back

Melting ice.

Front

Give an example of a chemical change.

Back

Burning wood.

Front

What happens to the molecules in a solid?

Back

In a solid, molecules are closely packed together and vibrate in place.

Front

What happens to the molecules in a liquid?

Back

In a liquid, molecules are close together but can move past one another.

Front

What happens to the molecules in a gas?

Back

In a gas, molecules are far apart and move freely.

Front

Is dissolving salt in water a physical or chemical change?

Back

Physical change.