F3 Chemistry Exam revision

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Across
  1. 3. The number of 12C atoms in 12g of 12C (6.02x1023)
  2. 6. Number written in front of formulae in a balanced chemical equation.
  3. 7. In chemistry, the __________ is a unit of the amount of substance.
  4. 10. In the formula of Ca(OH)2, it shows 1 __________.
  5. 13. The mass of 1 mole of a substance.
  6. 14. A vertical column in the Periodic Table. All elements in the same vertical column have the same number of outer shell electrons.
  7. 15. A horizontal row in the Periodic Table. All elements in the same row have the same number of occupied shells.
  8. 16. In the formula of Ca(OH)2, it shows 2 __________.
Down
  1. 1. It is the same as atomic number.
  2. 2. The adsorbent paper from paper chromatography showing the separation of different coloured substances.
  3. 4. The mass of solute which must dissolve in 100 g of solvent to form a saturated solution at a particular temperature.
  4. 5. The Group 0 elements are known as the __________ because they are almost completely unreactive.
  5. 8. All chemical equations must be __________.
  6. 9. The state symbol (aq) shows the __________ solution.
  7. 11. The number of __________ in an atom = mass number – atomic number
  8. 12. Liquids (or gases) which can mix with each other and form a homogenous mixture.