Chemistry- Hydrocarbons, alkanes and alkenes

Questions for GCSE Chemistry 

1. Which of these is a molecular compound?

  • Hydrogen chloride
  • Sodium chloride
  • Calcium oxide
  • Hydrogen oxide
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2. Which of these is a natural polymer?

  • Nanoethene
  • Silk
  • Poly(e)thene
  • Neoprene

3. Polymers are:

  • More than one molecule joined together
  • Long-chain molecules made up of monomers
  • Short-chain molecules made up of monomers
  • The building blocks of monomers

4. What is a covalent bond?

  • Two electrons joined together
  • The bond between to molecules
  • A shared pair of electrons
  • A bond involving the transfer of electrons from one atom to another

5. What is the word equation for complete combustion?

  • Methane + Oxygen ---> Carbon dioxide + Water
  • Fuel + Oxygen ---> Carbon monoxide + Water
  • Methane + Oxygen ---> Carbon dioxide + Oxygen
  • Ethane + Oxygen ---> Carbon dioxide + Poly(e)thene

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