I CAN DO THIS TEACHER!!!!

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Across
  1. 4. Group of vertebrate that has external ears.
  2. 6. the amount of matter in the body
  3. 8. to open and close the airhole of bunsen burner.
  4. 15. To obtain sugar from sugar solution.
  5. 17. we get this by dividing mass with volume.
  6. 18. The colour of a luminous flame is _________.
  7. 19. This substance is harmful in small doses.
Down
  1. 1. type of flame that give out soot.
  2. 2. This substance catches fire easily.
  3. 3. matter that does not have a definite shape or volume.
  4. 5. Annelid with segmented bodies
  5. 6. A process when a solid is changing to liquid form.
  6. 7. 2 or more elements chemically joined together
  7. 9. Group of vertebrates having egg with leathery shell.
  8. 10. To obtain distil water from coloured solution.
  9. 11. used to measure time accurately
  10. 12. instrument use to find mass.
  11. 13. Distance between two points defined as ____________.
  12. 14. ___________ blooded animals are animals which have have constant body temperature.
  13. 16. body is divided into 3 parts and has 3 pairs of legs.