Unit 12 Keyword Revision Crossword

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Across
  1. 4. to distort the shape or form of.
  2. 6. are made from clay, they are stiff but brittle. They are used to make glass, porcelain and bone china.
  3. 8. table that shows all the elements, arrange in a regular order to show patterns in properties.
  4. 10. easily broken.
  5. 12. a substance that reacts with many other substances, or reacts very easily.
  6. 14. a reaction where oxygen is removed.
  7. 15. a material which does not let energy flow through it easily.
  8. 17. a material that has ben manufactured by humans from raw materials.
  9. 19. is a vertical column on the Periodic Table.
Down
  1. 1. a constituent of a composite material which increase the composite’s stiffness and tensile strength.
  2. 2. able to be easily hammered into different shapes.
  3. 3. a list of metals which shows them in order of their reactivity, with the most reactive at the top.
  4. 5. rock that contains a metal compound from which the metal can be extracted.
  5. 7. a very long molecule, made from a series of smaller molecules (monomers) joined together.
  6. 9. a reaction where one element takes the place of another in a compound.
  7. 11. able to be stretched into a thin wire.
  8. 13. a material made by combining two or more other materials (the separate materials do not react together).
  9. 16. the sound a metal makes when you hit it.
  10. 18. is a row on the Periodic Table.