# What are the smaller particles that make up protons and neutrons?

Jul 3, 2017

Quarks which are held together by gluons.

#### Explanation:

There are 6 types of quarks, but only the up quark and the down quark are found in protons and electrons.

The up quark has an electric charge of $+ \frac{2}{3}$.
The down quark has an electric charge of $- \frac{1}{3}$

3 quarks make up the proton and neutron:

Proton - Electric charge of $+ 1$
Has two up quarks and one down quark to get a charge of positive 1 since ($\frac{2}{3} + \frac{2}{3} - \frac{1}{3} = + 1$)

Neutron - Electric charge of $0$
Has one up quark and two down quarks to get a charge of zero since ($\frac{2}{3} - \frac{1}{3} - \frac{1}{3} = 0$)