Front

What is the charge of an electron?

Back

Negative charge.

Front

Which atom is the simplest?

Back

Hydrogen.

Front

How many atoms make up a molecule?

Back

Two or more.

Front

How much smaller are atoms compared to the width of a hair?

Back

Atoms are more than 10,000 times smaller.

Front

What is the charge of a neutron?

Back

No charge.

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What subatomic particle has a positive charge?

Back

Proton.

Front

What is the nucleus of an atom?

Back

The central part of an atom, containing protons and neutrons.

Front

What is the difference between an atom and a molecule?

Back

An atom is a single unit, while a molecule is made up of two or more atoms.