Pre-Learning Activity

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Across
  1. 2. a change of state where liquid is heated
  2. 4. long cables with a silica core
  3. 8. The first chemical explosive
  4. 11. Describes elements that consists of single atoms
  5. 12. A substance being dissolved
  6. 18. A change from solid to gas
  7. 19. Clusters of atoms
  8. 20. minerals in metals such as copper and iron
  9. 21. solution A solution in which a substance is dissolved in water
Down
  1. 1. A decrease in size
  2. 3. Model A simplified representation of solids, liquids and gasses
  3. 5. A process where two liquids and gasses mix
  4. 6. Mixture of a metal with other metals or non-metals
  5. 7. A solid formed during a chemical change
  6. 9. the starting substances in a chemical reaction
  7. 10. describes liquid that do not mix
  8. 13. Grid - like structures of atoms
  9. 14. describe the substance that can chemically dissolve other substances
  10. 15. Shiny
  11. 16. a substance made of long chains of smaller units
  12. 17. Substances formed in chemical reaction
  13. 21. The basic particles that make up all substances