atomic structure

Front

Subatomic particles with a negative charge

Back

Electrons

Front

Subatomic particles with a positive charge

Back

protons

Front

Measure mainly of the nuclear particles: protons + neutrons

Back

Atomic Mass

Front

What is 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

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

Back

Mass number

Front

How many protons does an aluminium atom have?

Back

13

Front

How many neutrons does a sodium atom have?

Back

12

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