Other questions in this quiz

2. what percentage of the earths atomsphere is oxygen?

  • 21%
  • 30%
  • 7%

3. what is the scientific symbol for limestone?

  • CaCO3
  • H20
  • CaCoH3

4. an example of a alkane?

  • Carbon dioxide
  • Methane
  • ethene

5. what food product needs emulsifiers?

  • olive oil
  • Ice cream
  • potatoes

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