Atoms

Front

What is the basic unit of matter?

Back

Atoms are the basic unit of matter.

Front

What is the central part of an atom called?

Back

The nucleus is the central part of an atom.

Front

How many protons does an atom with atomic number 6 have?

Back

An atom with atomic number 6 has 6 protons.

Front

What is the atomic symbol for sodium?

Back

The atomic symbol for sodium is Na.

Front

What is the smallest particle of a specific type of matter?

Back

The smallest particle of a specific type of matter is known as an atom.

Front

What particles are found in the nucleus of an atom?

Back

The nucleus of an atom contains protons and neutrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What determines the atomic number of an element?

Back

The atomic number of an element is determined by the number of protons in its nucleus.