SCIENCE TEST

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1. What can the period tell you about the electrons in an atom?

  • How many shells in the outer shell .E.g carbon is in group 4 so has 4 electrons in the outer shell
  • How many electrons in the outer shell .E.g carbon is in group 4 so has 4 electrons in the outer shell
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2. What is a reversible reaction ?

  • A reaction which can go from reactants to products but also from products to reactants
  • reaction that moves backwards

3. What is the formula for a mean rate of reaction in terms of products ?

  • quantity of reactant product formed/time taken
  • quantity of reactant used/time taken

4. State the 3 subatomic particles

  • protons,nucleus ,electric
  • protons,neutrons,electrons
  • protons,nucleus ,electrons
  • project ,nucleus ,electric

5. What foluma relates to moles ,mass and Mr

  • Moles=mass/Mr
  • Moles=mass/RFM
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