Chemical Reactions (Chapter 21)

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Across
  1. 2. the chemicals that enter into a reaction
  2. 8. a single element reacts with a compound and takes the place of one of the other elements in the compound
  3. 9. French dude that first proved the Law of Conservation of Mass by reacting mercury (II) oxide into equal parts oxygen and mercury
  4. 14. reaction type where a compound breaks into smaller units
  5. 15. an example of an inhibitor used to preserve food
  6. 18. chemical reaction involving a gain of electrons
  7. 20. a chemical change where atoms of elements and compounds are rearranged to form new elements and compounds
  8. 21. reaction type where two compounds react and form two new compounds
  9. 23. the chemicals that are produced from a reaction
  10. 25. type of reaction where two simple substances react to form a more complex substance
  11. 26. type of reaction that absorbs thermal energy
  12. 28. a substance that slows down or stops a reaction
  13. 29. a change in this can be a clue to a reaction, such as a test tube getting warmer
  14. 30. bubbles formed in a liquid mean this phase of matter is being produced
  15. 31. a large number that is placed in front of a compound to represent number of units of that compound present in a reaction
Down
  1. 1. H, N, O, F, Cl, Br, and I are all _________, meaning they can't exist as one atom, so if they are alone in a reaction, they must be bonded to another atom of themselves
  2. 3. the common name for the decomposition reaction of water through electric current
  3. 4. a change in this can be a clue to a reaction, such as a chemical changing from blue to silver
  4. 5. type of reaction where a carbon compound reacts with oxygen to produce carbon dioxide and water
  5. 6. these are formed when chemical reactions take place
  6. 7. the chemical formula for rust when iron (II) synthesizes with oxygen
  7. 10. chemical reaction involving a loss of electrons
  8. 11. a substance that speeds up a reaction
  9. 12. the common name for the synthesis reaction of a metal and oxygen
  10. 13. type of reaction that releases thermal energy
  11. 16. small numbers that depict number of atoms in a compound or molecule
  12. 17. a solid that forms out of a chemical reaction
  13. 19. a chemical phase (aq) where a substance is dissolved in water
  14. 22. to represent the law of conservation of matter, equations must be ___________
  15. 24. a shorthand way of representing reactions using formulas, symbols, coefficients, and subscripts
  16. 27. matter is never created or destroyed as stated in the law of ___________ of matter