Paper 1

• Properties of metals

  aluminium- ductile, malleable, good conductivity, low density

  uses- foil food wrap, high voltage cables

  copper- unreactive, ductile, good conductivity

  uses- electrical wiring, water pipes

  gold- ductile, shiny, good conductivity

  uses- jewellery, electrical junctions
• balanced equations:

  1. calculate equation of element in moles= mass/atomic mass
  2. find how many moles are needed
  3. find relative formula mass of second element (oxide)
  4. amount(mol) x formula mass
• calculating the amount of substance

  $mass \div atomic mass$
• Relative formula mass

  sum of relative atomic masses of all atoms in the numbers shown in the formula
• Displacement reactions

  more reactive metal will displace a less reactive metal from a solution of its salt