Yr9 Chemistry Revision

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Across
  1. 6. Soft, reactive, low density metallic element used in yellow street lights.
  2. 10. Visible characteristic of a chemical compound like copper sulphate.
  3. 13. When liquid changes state to a gas.
  4. 15. Something with a pH less than 7.
  5. 17. The element present in all organic compounds.
  6. 18. Where new chemical products are formed from chemical reactants.
  7. 20. Gas formed when metal carbonate and acid react.
  8. 22. Acid rain results from the burning of this yellow element.
  9. 23. Industrially important form of iron used for car bodies and structural girders.
  10. 24. A liquid with a solid dissolved in it.
  11. 25. Chemical reaction between a substance and oxygen in the air.
  12. 28. oxide Iron corrodes in the presence of air and water to form ...
  13. 29. Complete reaction between acid and alkali.
  14. 31. Indicator that spans the range 0 to 14.
  15. 32. Halogen that makes up half of the atoms in common salt.
  16. 36. A tiny particle, much lighter than an atom, that carries a negative electric charge.
  17. 37. Able to be picked up with a magnet.
  18. 39. The most common solvent.
  19. 40. This is found on the periodic table. It contains only one kind of atom.
  20. 41. This is from 0 to 14 for the pH scale of acids and alkalis.
  21. 42. A chemical compound containing oxygen and one other element.
Down
  1. 1. Test for hydrogen.
  2. 2. Unreactive metallic element with extremely high electrical conductivity used for coins.
  3. 3. Something with a pH of 7.
  4. 4. Non metallic gaseous element needed for respiration./
  5. 5. When substances chemically combine they ......
  6. 7. This is called natural gas, and is used in our Bunsen burners.
  7. 8. When a liquid cools to become a solid.
  8. 9. Test for oxygen.
  9. 10. When a gas changes state to a liquid.
  10. 11. Gas formed when metal and acid react.
  11. 12. A chemical that will easily react to form a new compound.
  12. 14. Mild corrosion of silver, for example.
  13. 16. A finishing substance in a chemical reaction.
  14. 17. Acid from grapefruits and oranges.
  15. 19. Compounds containing only a metal, carbon and oxygen.
  16. 21. Solid formed when metal oxide and acid react.
  17. 26. Solid formed when metal carbonate and acid react.
  18. 27. A starting substance in a chemical reaction.
  19. 30. Test for carbon dioxide.
  20. 32. A group of atoms chemically joined.
  21. 33. This means to do with heat.
  22. 34. Most common magnetic element. Corrodes to form rust.
  23. 35. Able to be drawn (pulled) easily into a wire.
  24. 38. Something with a pH more than 7.