Science Crosswords

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Across
  1. 2. description of a substance that can be pounded or rolled into sheets
  2. 5. principle that matter is not created or destroyed in a chemical reaction
  3. 10. chemical reaction that releases heat
  4. 12. Vertical columns in the periodic table
  5. 13. chemical reaction that absorbs energy
  6. 16. element that has both metallic and non-metallic properties
  7. 17. the smallest part of an element that is representative of that element
  8. 18. property that describe the physical appearance of a substance
  9. 23. Comes from the Arabic word "alkimiya", meaning "the chemist"
Down
  1. 1. an experiment in which all reactants and all products of a chemical reaction are accounted for
  2. 2. the temperature in which a solid will melt
  3. 3. pure substance that cannot be broken down into other substances
  4. 4. group 17 elements in the periodic table; most reactive non-metals
  5. 5. change that results when two or more substances react to create a different substance
  6. 6. measure of atomic mass
  7. 7. an experiment in which one or more products of a chemical reaction can escape
  8. 8. pure substance formed when non-metals combine
  9. 9. atom that has become electrically charged because it has lost or gained electrons
  10. 11. Anything that has mass and occupies space
  11. 14. description of a solid that can be stretched into a long wire
  12. 15. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  13. 19. slow chemical change that occurs when oxygen in the air reacts with metal
  14. 20. substance that reacts with other substances in a chemical reaction to create new substances with different properties
  15. 21. new substance produced in a chemical reaction between reactants
  16. 22. Horizontal row in the periodic table