Atomic Structure and Isotopes

HideShow resource information
  • Created by: Bella101
  • Created on: 21-04-17 14:38

Atomic Structure

What is an atom?

  • The smallest particle of a chemical element that can exist.
  • Atoms are the basic building blocks of ordinary matter. 
  • Image result for atom

What does an atom consist of?

Atoms are made from smaller subatomic particles.

  • Atoms consists of a central nucleus surrounded by one or more electrons.
  • Atoms consist of:
  • A central necleus surrounded by shells.
  • Nutrons
  • Protons
  • Electrons


  • Central part of the atom.
  • Most of the atoms mass is located here.
  • Made of protons and neutrons.


  • Neutrons as the name suggests are neutral, uncharged particles.
  • Found within the atomic nucleus.


  • Protons are positively charged particles.
  • They have a relative charge of +1.
  • Found in the nucleus.


  • Electrons are  arranged in energy levels or shells surrounding the nucleus. Each shell can hold different numbers of electrons.
  • Electrons are negatively charged particles.
  • They have…


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Atoms resources »