Chemistry- General Quiz

1. Why is cryolite added in the extraction of aluminium?

  • It raises the melting point
  • It lowers the melting point
  • It looks pretty
  • It speeds up the reaciton
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Other questions in this quiz

2. What are the three raw materials in the blast furnace?

  • Iron oxide, water, carbon dioxide
  • Iron oxide, coke, carbon
  • Iron oxide, coke, limestone
  • Iron oxide, limestone, water

3. In group 1, how does the reactivity change as you go down the group?

  • It increases
  • It stays the same
  • It decreases
  • It doubles

4. Moles= ???

  • Mr/mass
  • Mass x atomic number
  • Mass/ Mr
  • Mass x Mr

5. Isotopes have a different number of what?

  • Electrons
  • Neutrons
  • Protons
  • Electron shells

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