- Created by: Maryam_Alayha14
- Created on: 11-10-15 17:19
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…