Atoms and Periodic Table

Front

Where is the concentration of mass in an atom?

Back

The nucleus.

Front

What is the atomic number of an atom?

Back

The number of protons in the nucleus of an atom.

Front

What is the atomic mass of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What makes an atom neutral?

Back

An atom is neutral if it has the same number of protons and electrons.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the electron cloud?

Back

The region around the nucleus where electrons are likely to be found.

Front

How do you find the number of neutrons in an atom?

Back

Subtract the atomic number from the atomic mass.

Front

What is the significance of the atomic number?

Back

It identifies the element and determines its position in the periodic table.