UNITS 7-8

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Across
  1. 2. object that can attract other objects made of iron and magnetic metals
  2. 5. components distinguished
  3. 10. electricity into another tipe of enrgy
  4. 12. separate solids from liquids in homogeneous mixtures
  5. 16. close path through which electricity flows
  6. 20. flow of electrical charges through materials
  7. 21. material which does not allow electrical charges to move
  8. 22. sinonim of homogeneous mixture
  9. 23. chemical reaction in yeast and bacteria
Down
  1. 1. components cannot be distinguished
  2. 3. separate liquids of different boiling points in homogeneous mixtures
  3. 4. separate solids from liquids, or solids with different size particles, in heterogeneous mixtures
  4. 6. force of attraction exerted by magnets
  5. 7. when some metal substances combine with oxygen in the presence of water
  6. 8. material allows electrical charges move
  7. 9. to orient ourselves
  8. 11. atoms react and group each other differently
  9. 13. substance contains only one type of component
  10. 14. objects or substances burn this happens
  11. 15. contains one or more pure substances
  12. 17. usually made of copper, wrapped in plastic covering
  13. 18. separate substances of different density in heterogeneous mixtures
  14. 19. component of electric circuit which provides energy