Atoms, Elements, Molecules, and Compounds Test

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is an element?

Back

A basic type of matter that cannot be broken down into simpler substances.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is a compound?

Back

A substance formed when two or more different elements combine chemically.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a neutron?

Back

Neutral.

Front

How many protons does an aluminum atom have?

Back

13.

Front

If an atom is neutral, how many electrons does it have if it has 13 protons?

Back

13 electrons.

Front

What determines the identity of an element?

Back

The number of protons in its nucleus.