MATTER 5

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Across
  1. 4. this means finding another purpose for materials that have already been used
  2. 7. this means using less of a certain material and using alternatives
  3. 12. this means producing a new product out of discarded materials
  4. 13. Matter is composed of ______
  5. 14. the ability of gas molecules to spread out faster
  6. 16. liquid minus heat equals solid
  7. 18. the complete reverse of deposition; solid to gas
  8. 21. refers to the change in the phases but no new product formed
  9. 23. materials do not rot easily
  10. 24. the ability of liquid to flow
  11. 25. the ability of a material to hold liquid to a certain extent
Down
  1. 1. the amount of space occupied by an object
  2. 2. the amount of matter in an object
  3. 3. the ability of a material to reflect light
  4. 4. this is caused by the reaction of iron with oxygen present in the air
  5. 5. in evaporation, liquid + heat is equal to _____
  6. 6. Complete: Materials __________ Facility
  7. 8. the complete change in the identity of matter
  8. 9. the ability of a material to burn
  9. 10. A molecule is composed of a group of ______
  10. 11. the amount of matter present in a given volume of substance
  11. 15. it is defined as anything that has mass and volume
  12. 17. materials that can be decomposed by bacteria or other living things
  13. 19. solid + heat = liquid
  14. 20. a serious problem we facing nowadays which the Earth receives greater amount of carbon dioxide in the atmosphere, the greater the heat trapped in planet
  15. 22. property of solid to be hammered into sheets