Atomic structure

Front

What is atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What are the three main subatomic particles?

Back

Protons, Neutrons, and Electrons.

Front

What charge do protons have?

Back

Protons have a positive charge.

Front

What charge do electrons have?

Back

Electrons have a negative charge.

Front

What charge do neutrons have?

Back

Neutrons have no charge (they are neutral).

Front

Where are protons located in an atom?

Back

Protons are located in the nucleus of an atom.

Front

Where are neutrons located in an atom?

Back

Neutrons are also located in the nucleus of an atom.

Front

Where are electrons located in an atom?

Back

Electrons are located in the electron cloud surrounding the nucleus.

Front

How many protons does Sodium have?

Back

Sodium has 11 protons.

Front

How many neutrons does Arsenic have if its atomic mass is 75 and it has 33 protons?

Back

Arsenic has 42 neutrons (75 - 33 = 42).