Protons, Neutrons, & Electrons

Front

What particles are found in the nucleus of an atom?

Back

Protons and Neutrons.

Front

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

Back

Subtract the atomic number from the mass number.

Front

How many neutrons are in magnesium (atomic number 12, mass number 24)?

Back

12 neutrons.

Front

How many electrons are in Aluminium (atomic number 13)?

Back

13 electrons.

Front

What is the atomic number of silicon?

Back

14.

Front

What is the charge of a proton?

Back

Positive (+1).

Front

What is the charge of a neutron?

Back

Neutral (0).

Front

What is the charge of an electron?

Back

Negative (-1).

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.