Other questions in this quiz

2. an example of a alkane?

  • Methane
  • ethene
  • Carbon dioxide

3. what percentage of the earths atomsphere is oxygen?

  • 21%
  • 30%
  • 7%

4. what charge does a proton have?

  • positive charge
  • no charge
  • negative charge

5. what percentage of the earths atomspheres gases is nitrogen?

  • 19%
  • 78%
  • 5%

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