ESQs 2

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  • Created by: Batek
  • Created on: 17-04-22 11:17

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

  • to make fire
  • so that the magnesium metal atoms can overcome their activation energy
  • so that the magnesium metal ions can overcome their activation energy
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Other questions in this quiz

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

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

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

  • Grams
  • Kilograms
  • Pounds

4. The relative atomic mass of an element compares the mass of an atom of an element with the mass of an atom of

  • Carbon-10
  • Carbon-12
  • Oxygen-12

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

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

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