Atoms Unit Test

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom.

Front

What are atoms considered to be?

Back

Atoms are the basic building blocks of matter.

Front

What is the overall charge of the electron cloud?

Back

The overall charge of the electron cloud is negative.

Front

What is the primary function of electrons in an atom?

Back

The primary function of electrons is to form chemical bonds.

Front

How are energy levels (Electrons) depicted in a Bohr diagram?

Back

Energy levels are depicted as rings in a Bohr diagram.

Front

What particles make up the nucleus of an atom?

Back

The nucleus of an atom is made up of 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 identity of an element?

Back

The number of protons in the nucleus determines the identity of an element.