UNIT B VOCABULARY

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Across
  1. 2. a chemical combination of two or more elements in a specific ratio
  2. 4. may cause life threating effects even in small amounts/short exposure
  3. 5. an element defined by the number of protons it has
  4. 7. globally Harmonized system
  5. 9. anything on the periodic table
  6. 10. a subatomic particle with only negative charges of electricity
  7. 11. characteristics that can be used to describe a substance
  8. 12. unicellular microorganism's that need warmth, air, and moisture to survive
  9. 15. shininess of a substance
  10. 19. conduct of electricity
  11. 20. where there are positive and negative neutrons
  12. 21. anything that has mass and occupies space
  13. 22. a reversible change in the matter
  14. 23. you can mold objects without breaking it if it has enough of this.
  15. 25. the mass of one atom of an element in atomic mass units
Down
  1. 1. the transition from a solid straight to a gas phase without passing through the liquid phase
  2. 3. made up of two or more substances combined together
  3. 6. a non-reversible change that forms a new substance with different properties
  4. 8. most reactive non-metals and can be used to form new helpful substances
  5. 13. metals that react to air and water
  6. 14. a section of the periodic table solid at room temperature, often malleable, have luster, conduct electricity, have ductility.
  7. 16. vinegar
  8. 17. stretched into a long wire
  9. 18. may cause skin burns and permanent eye damage
  10. 24. the possibilty of suffering harm or injury