Chemistry C1 triple award aqa part 1

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  • Created by: pixar
  • Created on: 11-06-14 09:00
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  • Chemistry C1 AQA Triple award
    • Atoms and Elements
      • Atoms have a small nucleus surrounded by electrons
        • The Nucleus
          • in the middle of an atom
          • contains protons and neutrons
          • protons are positively charged
          • neutrons have no charge (they're neutral)
          • nucleus has an overall positively charge
        • The Electrons
          • move around the nucleus
          • they are negatively charged
          • tiny but cover alot of space
          • they occuy shells around the nucleus
      • number of protons equall the number of electrons
        • atoms have no charge overall (they're neutral)
        • number of protons are the same as the number of electrond
        • the charge on the neutrons is the same as the electrons but just opposite
        • if some electrons are added or removed the atom becomes charged and it becomes an on
      • elements only consist of 1 atom
        • number of protons determines the atom
        • if a substance only contains one type of atom its called an element
    • The Periodic Table
      • image
        • stick periodic table here
      • atoms are represented by symbols
        • one or two letter symbol
          • O = oxygen
          • Mg = magnesium
          • C = Carbon
      • atom diagram
        • atom structure as seen on a periodic table
          • top number = mass number
          • bottom number = number of protons and electrons
          • number of neutrons = proton number - mass number
          • (stick atom diagram here)
      • the periodic table puts elements with similar properties together
        • the elements in the final column are all noble gases
          • they all have a full outer shell of electrons
        • all of the elements in a group haver the same amount of electrons in the outer shell
          • this is why elements in the same group are similar
        • the vertical columns are called groups and are represented by roman numerals


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