AQA Revision Notes - C2

HideShow resource information

Subatomic Particles

  • Atoms have a small central nucleus made up of protons and neutrons.
  • Nucleus surrounded by electrons.
  • Protons have a positive charge [+1].
  • Electrons have a negative charge [-1].
  • Atoms of different elements have different numbers of protons (also known as atomic number).
  • Atomic number is the number of protons.


No comments have yet been made

Similar Science resources:

See all Science resources »See all Chemical reactions resources »