Atomic Structure

Front

Atomic number

Back

Number of protons in an atom

Front

Which subatomic particles are found in the nucleus of an atom? Options: Protons and Electrons, Protons and Neutrons, Neutrons and Electrons, Protons, Neutrons and Electrons

Back

Protons and Neutrons

Front

What electrical charge does a proton have?

Back

+1

Front

What mass does a neutron have?

Back

1 amu

Front

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

Back

Mass number

Front

How many protons does an aluminum atom have?

Back

13

Front

How many electrons does a sodium atom have?

Back

11

Front

Complete the missing label on the diagram.

Back

Nucleus

Front

Atoms of the same element must always have the same number of _________

Back

protons

Front

The _________ of an element equals the number of protons in an atom of that element.

Back

atomic number