C1- Atoms

C1- Atoms

1. Protons

   • Relative Mass = 1
   • Charge= +1
   • Found in the nucleus

2. Neutrons

   • Relative Mass= 1
   • Charge= 0
   • Found in the nucleus
   • To find out the number of neutrons, just subtract the

3. Electron

   • Relative Mass= very small
   • Charge= -1
   • Orbits around the nucleus in shells.

4. Mass number is the biggest number

   • it tells you the total number of protons and neutrons in the atom.

5. Number of Protons are equal to the number of Electrons

6. Atomic number is the smallest number

   • it tells you how many protons there are.