C1 - Separating Mixtures

C1 - Separating Mixtures

1. types of substance

   • compounds
     • pure water
       • sodium chloride
         • Group 7 elements are called The Halogens
           • Heavy- substances with a high boiling point
             • Atomic number
               • The proton number it is different for every element
                 • Atoms
                   • An atoms has no overall charge the number of protons= the number of electrons
       • Elements- a material with only one type of atom
         • compound- two or more elements bonded
   • elements
     • copper
       • aluminium
     • Cu- copper
   • mixtures
     • milk
       • beer

2. As you go down any group it gets less reactive

   • Group 1 the most reactive is Lithium and the least reactive is Francium
   • In group 7 the most reactive is Fluorine and the least reactive is Astaine
     • Ra-radium
     • Protons have a positive charge
       • All halogons go round in pairs
         • Evaporation- turning a liquid into a gas
         • Condensation- turning a gas into a liquid
           • The group number tells you the number of neutrons on the outer shell
         • Fractional- A type of distillation used to seperate crude oil
         • As you go down group 7 the boiling and melting point goes up
     • good conductors of electricity
     • less reactive has more shells so it is harder to gain the extra electron

3. K- potassium

   • Group 8 elements are called The Noble Gases
   • Crystallisation- Crystllisation separtes solids that have dissolved in a liquid

4. C- carbon

5. An isotope is an element with a different number of nutrons

   • Group 1 elements are called The Alkali Metals

6. iron iodide + fluorine -- Iron fluoride +Iodine

   • Every atom has the same number of protons as electrons
     • Periods are the rows in the periodic table
     • Groups are cloums on the periodic table
       • elements in the same group have different properties
   • The number of protons in an atom is known as the atomic number

7. The mass number is the number of protons added to number of neutrons

8. properties of metals

   • high melting points
     • Strong
       • Shiny
         • good conductors of heat

9. silver chloride + fluorine -- silver fluorine + chloride

   • heating - evaporating - cooling - condensation

10. More reactive has less shells so it is easier to gain the extra electron

    • Isotope have the same chemical reaction

11. Distillation- Evaporation followed by condensation