Unit B Science Crossword

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Across
  1. 4. New substance produced
  2. 5. The smallest part of an element
  3. 7. Slow chemical change that occurs when oxygen reacts with a metal
  4. 9. Change of state from a gas to a liquid
  5. 11. Horizontal row of elements on Periodic Table
  6. 14. The release of heat
  7. 17. Change state from gas to solid
  8. 19. Chemical combination of two or more elements in a specific ratio
  9. 21. Substance that reacts with another substance
  10. 22. A cloudy mixture in which the particles can't be easily separated
  11. 24. An organic catalyst
Down
  1. 1. Invisible negatively charged particle that orbits the nucleus
  2. 2. A substance that speeds up a chemical reaction
  3. 3. A physical substance
  4. 6. A material that electric charge can move through easily
  5. 8. Chemical reaction that occurs when oxygen reacts with a substance and gives off energy
  6. 9. Ability of a substance to conduct electricity or heat
  7. 10. The absorption of heat
  8. 12. Workplace Hazardous Materials Information System
  9. 13. Element that has both metallic and non-metallic properties
  10. 15. A pure substance on the Periodic Table
  11. 16. Can be pounded into sheets
  12. 18. When an atom becomes electrically charged from the loss or gain of electrons
  13. 20. Most reactive non-metals
  14. 23. Can be stretched into long wire