Units 7 and 8 vocabulary

1234567891011121314151617181920
Across
  1. 2. a material that lets the electrical charges to move
  2. 6. substance type of substance that contains only one type of component
  3. 7. type of matter that contains more than one substance
  4. 8. a device with a magnetic needle that always point north
  5. 9. a A Method to separate solids to liquids
  6. 10. A method to separate liquids that have different boiling points in homogeneous mixtures
  7. 12. Are materials that do not allow electrical charges to move
  8. 13. a chemical reaction that happens when objects or substances are burned
  9. 15. mixture A mixture in which the components cannot be distinguished
  10. 17. Is a method to separate solids from liquids in homogenous mixtures
  11. 18. circuit a close path which electricity flows
  12. 19. An object that can attract other objects
  13. 20. The component of an electric circuit that transforms electricity into another type of energy
Down
  1. 1. a chemical reaction that happens in some living things such us the yeast and bacteria
  2. 2. a connecting wire usually made of copper wrapped in plastic covering
  3. 3. reactions this happens when atoms react and group together differently
  4. 4. The component of an electric circuit that give us electricity
  5. 5. a method to separate substances of different density
  6. 7. One electric current flows through a bit of magnetic metal, such as iron
  7. 11. Another type of word for homogeneous mixture
  8. 14. A chemical reaction that occurs, when metal substances combine with oxygen in the presence of water
  9. 16. current the flow of the electrical charges throughout the materials