Formative Test on the Structure of an Atom

Front

What is the subatomic particle that is outside the nucleus of an atom?

Back

Electron

Front

Which two subatomic particles constitute the nucleus of an atom?

Back

Proton and Neutron

Front

What does the term 'neutral' mean in the context of a neutron?

Back

Neutron has no charge.

Front

What is the atomic mass of copper (Cu)?

Back

63.55

Front

What part of the atomic model is useful in finding the PERIOD of the atom in the Periodic Table?

Back

Main Energy Levels

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is the mass of a neutron compared to a proton?

Back

Approximately equal.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus.

Front

What is the significance of the atomic mass number?

Back

It represents the total number of protons and neutrons in an atom.