Junior Cert Chemistry 1 www.galwaymathsgrinds.com

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Across
  1. 3. The changing of a liquid into a gas at the surface of the liquid
  2. 6. A particle found outside the nucleus of the atom
  3. 7. A substance made up of two or more elements combined chemically
  4. 8. A mixture of metals
  5. 9. Substances with pH less than 7 are ?
  6. 15. One of the states of matter
  7. 16. The formation of crystals when a hot saturated solution is cooled
  8. 20. Type of reaction that takes in heat
  9. 22. The strip of paper on which the parts of a mixture have been separated by chromatography
  10. 23. Acids turn litmus from ---- to red
  11. 24. Turn litmus from red to blue
  12. 25. Rate of change of distance with time
  13. 27. A substance that alters the rate of a chemical reaction but is not used up in the reaction
  14. 28. The melting point is the temperature at which a solid changes to a ?
  15. 29. Cert Chemistry
  16. 30. A substance that can not be split into simpler substances by chemical means
  17. 31. Element represented by symbol Zn
  18. 33. Anything that occupies space and has mass
  19. 34. A substance that dissolves other materials to form a solution
  20. 35. A mixture in which small solid or liquid particles are suspended in a liquid or gas
  21. 36. The vaporising of a liquid by boiling it and then condensing the vapour by cooling it
Down
  1. 1. This table arranges elements in order of increasing atomic number
  2. 2. Acid + base gives salt + ?
  3. 4. Type of reaction resulting in formation of one or more new substances
  4. 5. Compound that changes colour according to whether a substance is acidic or basic
  5. 8. This number gives the number of protons in an atom
  6. 10. The changing of a gas to a liquid
  7. 11. A substance made up of two or more different substances mingled together but not chemically combined
  8. 12. The minimum energy that colliding particles must have for a reaction to occur
  9. 13. The spreading out of materials due to the movement of their particles
  10. 14. A method of separating an insoluble solid from a liquid using a material that allows the liquid to pass through but not the solid
  11. 17. The smallest particles of an element that still has the properties of that element
  12. 18. A solubility curve graphs how the solubility of a substance varies with ?
  13. 19. This number gives the number of protons + neutrons in an atom
  14. 21. The product of distillation
  15. 26. Type of solution in which there is a small amount of solute in a large amount of solvent
  16. 30. Type of reaction that gives out heat
  17. 32. A solid with regular shape and in which the particles within it are arranged in a regular pattern