Atoms Atoms Atoms

Front

What is an atom?

Back

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

Front

What are the three main subatomic particles?

Back

The three main subatomic particles are protons, neutrons, and electrons.

Front

What charge does a proton have?

Back

A proton has a positive charge.

Front

What charge does a neutron have?

Back

A neutron has no charge (neutral).

Front

What charge does an electron have?

Back

An electron has a negative charge.

Front

How many protons are in a hydrogen atom?

Back

A hydrogen atom has 1 proton.

Front

What is the chemical symbol for water?

Back

The chemical symbol for water is H₂O.

Front

How many hydrogen atoms are in one molecule of water (H₂O)?

Back

There are 2 hydrogen atoms in one molecule of water.

Front

What is the nucleus of an atom?

Back

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

Front

What is the role of electrons in an atom?

Back

Electrons orbit the nucleus and are involved in chemical bonding.