HMH Science Dimensions 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 a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without changing 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

What is an example of a physical change?

Back

Tearing paper is an example of a physical change.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is electroplating?

Back

Electroplating is the process of coating a metal with another metal using electricity.

Front

What is magnetic separation?

Back

Magnetic separation is the process of separating mixtures using a magnet.