Atomic structure

HideShow resource information
  • Created by: RachelH
  • Created on: 16-03-14 15:07
View mindmap
  • Atomic structure
    • The nucleus at the centre of an atom contains two types of particle, called protons and neutrons
      • Protons have a positive charge and neutrons have no charge
    • Electrons are tiny negatively charged particles that move around the nucleus
      • An atom has no overall charge because the number of protons is equal to the number of electrons and their chargers are equal and opposite
        • Proton +1 and electron -1
    • All atoms of an elements contain the same number of protons
      • This number is called the atomic number (or proton number) of the element
    • Elements are arranged in order of their atomic numbers in the periodic table
      • The atomic number is also the number of electrons in an atom of the element
    • The mass number is the total number of particles in the nucleus of an atom, so it is the number of protons plus the number of neutrons

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Atoms resources »