Physical Science Mod 19

Edit Answers
123456789101112131415161718192021222324252627282930
Across
  1. 4. an insoluble compound that comes out of a solution during a double-displacement reaction
  2. 8. a reaction in which the positive ion of one compound replaces the positive ion of the other compound to form two new compounds
  3. 9. a reaction that absorbs thermal energy
  4. 10. a change in which one or more substances are converted into new substances
  5. 13. the force that holds two atoms together
  6. 15. a substance that slows down chemical reactions
  7. 16. a number that shows how many units of a substance take part in a reaction
  8. 17. a substance that speeds up a chemical reactions without being used up
  9. 21. force acting on a surface
  10. 25. a reaction that releases thermal energy
  11. 26. a loss of electrons during a chemical reaction
  12. 27. the new substances that are produced in a chemical reaction
  13. 28. 6.022 x 1023 particles of a substance
  14. 29. chemical shorthand that uses symbols to tell what elements are in a compound and their ratios
  15. 30. states atoms, ions, and molecules must collide to react
Down
  1. 1. a way to describe a chemical reaction using chemical formulas and other symbols
  2. 2. a reaction in which one element replaces another element in a compound
  3. 3. the physical forms in which all matter exists, most commonly solid, liquid, and gas
  4. 5. rate at which reactants change to products
  5. 6. a gain of electrons during a chemical reaction
  6. 7. a reaction in which two or more substances combine to form another substance
  7. 9. a reaction that absorbs energy
  8. 11. a reaction in which a substance reacts with oxygen to produce heat and light
  9. 12. a reaction in which one substance breaks down, or decomposes, into two or more substances
  10. 14. when a stress is applied at equilibrium, the reaction proceeds in the direction opposite the stress
  11. 18. the substances that react in a chemical reaction
  12. 19. a reaction that releases energy
  13. 20. a reaction that can occur in both the forward and reverse directions
  14. 22. a chemical equation that has the same number of atoms of each element on both sides
  15. 23. the mass of one mole of a substance in grams
  16. 24. a state in which forward and reverse reactions proceed at the same rate