Other questions in this quiz

2. Electrolysis is:

  • A form of displacement with carbon.
  • Splitting radioactive nuclei.
  • Splitting up ionic compounds using electricity.
  • Generating electricity by burning fossil fuels.

3. Bronze is an alloy of:

  • Copper and tin
  • Copper and nickel
  • Gold and zinc
  • Zinc and tin

4. Why are alloys stronger and harder than pure metals?

  • The added metal is harder than the original metal.
  • Different sized atoms disrupt the regular arrangement of atoms and so the layers cannot slide over each other.
  • Different types of free electrons repel each other and so keep the metal in a certain shape.
  • The atoms are now bigger so there is less room to move.

5. What does limestone thermally decompose to form?

  • Calcium oxide and carbon dioxide
  • Calcium oxide and water
  • Calcium dioxide and carbon monoxide
  • Calcium dioxide and carbon dioxide

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