Other questions in this quiz

2. What does the top number of each element mean?

  • That number - bottom number = Neutrons
  • That number - bottom number = Protons
  • That number - bottom number = Electrons

3. Describe how to test the gas to show that it is hydrogen.

  • Place a lighted splint in a test tube containing the gas. If the gas is hydrogen, there will be a squeaky pop
  • Place a lighted splint in a test tube containing the gas. If the gas is hydrogen, there will be a quiet pop
  • Place a splint in a test tube containing the gas. If the gas is hydrogen, there will be a squeaky pop

4. Explain why the magnesium has to be heated to start the reaction

  • so that the magnesium metal atoms can overcome their activation energy
  • so that the magnesium metal ions can overcome their activation energy
  • to make fire

5. One mole of a substance is the relative formula mass in

  • Grams
  • Kilograms
  • Pounds

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