Front

What are atoms?

Back

Atoms are the basic building blocks of matter. Everything in the universe is made up of atoms.

Front

How many different types of atoms are there?

Back

There are 118 different types of atoms.

Front

What do atoms form when they stick together?

Back

Atoms form bonds.

Front

What do atoms take, give, or share to form bonds?

Back

Atoms take, give, or share electrons.

Front

What is a molecule?

Back

A molecule is made up of two or more atoms bonded together.

Front

What is hydrogen peroxide made of?

Back

Hydrogen peroxide is made of 2 hydrogen atoms and 2 oxygen atoms.

Front

Can a molecule be made of only one type of atom?

Back

Yes, but it is not called a compound.

Front

What is a compound?

Back

A compound is a molecule made of different types of atoms bonded together.

Front

What is the smallest unit of an element?

Back

An atom is the smallest unit of an element.

Front

What are protons, neutrons, and electrons?

Back

Protons are positively charged particles, neutrons have no charge, and electrons are negatively charged particles.