LT 2 - Structure of the Atom

Front

What is at the center of every atom?

Back

A nucleus.

Front

Which element has 31 protons?

Back

Gallium.

Front

What charge does a neutron have?

Back

Neutral.

Front

What does an atomic number of 8 indicate about an oxygen atom?

Back

It has 8 protons.

Front

What is the atomic number?

Back

The number of protons in an atom.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

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 role of electrons in an atom?

Back

They orbit the nucleus and are involved in chemical bonding.