- Created by: krishmax
- Created on: 30-01-15 15:06
Atoms consist of electrons surrounding a nucleus that contains protons and neutrons. Neutrons are neutral, but protons and electrons are electrically charged: protons have a relative charge of +1 and electrons have a relative charge of -1.
Atoms and elements
All substances are made of tiny particles called atoms. An element is a substance that is made of only one sort of atom. There are…