Atoms and Molecules

Front

What is the charge of an electron?

Back

Negative charge.

Front

How many atoms are in a molecule of water?

Back

3 atoms (2 hydrogen and 1 oxygen).

Front

What is the charge of a neutron?

Back

No charge.

Front

How many atoms are needed to form a molecule?

Back

At least 2 atoms.

Front

What is an element?

Back

A substance made up of only one type of atom.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the smallest unit of an element?

Back

An atom.

Front

What is the chemical formula for water?

Back

H2O.

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.