Subatomic Particles

Subatomic particles are the particles that make up atoms. There are three main types of subatomic particles: protons, neutrons, and electrons.

Protons

Protons are positively charged particles found in the nucleus of an atom. Each proton has a mass of approximately 1 atomic mass unit (amu).

Neutrons

Neutrons are neutral particles found in the nucleus of an atom. Like protons, they also have a mass of approximately 1 amu.

Electrons

Electrons are negatively charged particles that orbit the nucleus of an atom in specific energy levels. They have a much smaller mass compared to protons and neutrons.

Atomic Structure

The arrangement of these subatomic particles determines the properties of an atom. Protons and neutrons are located in the nucleus, while electrons move around the nucleus in specific energy levels or shells.

Study Guide

1. What are the three main types of subatomic particles?
2. Where are protons and neutrons located?
3. What is the charge of an electron?
4. How do electrons move around the nucleus?
5. What is the mass of a proton?

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