Chapter 7 CrossWord Puzzle

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Across
  1. 1. The principle that states that a chemical system in equilibrium will adjust its equilibrium position in such a way as to reduce the effector of changes made into the system.
  2. 5. The minimum energy needed for a chemical reaction to occur.
  3. 7. A chemical reaction that releases more thermal energy than it absorbs.
  4. 8. A substance that slows the rate of a reactions by reducing the effectiveness of catalysts.
  5. 10. An exothermic chemical reaction in which a fuel reacts with oxygen.
  6. 15. A reaction in which the product can react together to re-form the original reactant.
  7. 16. A substance that helps a reaction happen faster but is not used up in the reaction.
  8. 17. A substance that is formed during a chemical reaction.
  9. 20. A substance that enters into a chemical reaction.
  10. 21. The model states that for a reaction to occur, the reactant particles must collide with each other with the proper alignment and with enough energy.
  11. 22. A chemical reaction that absorbs more thermal energy than it releases.
  12. 23. The law states that every effect has a specific, identifiable cause, and for every cause, there is a definite and predictable effect.
  13. 24. A process that rearranges the atoms in one or more substances into one or more new substances.
Down
  1. 2. The speed of a reaction.
  2. 3. A chemical reaction in which one element in a compound is replaced by another element.
  3. 4. A number placed in front of a chemical formula within a chemical equation shows how many units of a reactant or product are needed to balance the chemical equation.
  4. 6. A chemical reaction in which a single reactant breaks down into two or one product.
  5. 9. A combination of chemical formulas and symbols that models a chemical reaction.
  6. 11. The mass of one mole of a substance.
  7. 12. A chemical reaction in which two compounds swap cations or anions with each other.
  8. 13. SI fundamental unit for the quantity of matter in a substance; a count equal to 6.022 x 10 to the power of 23.
  9. 14. A chemical reaction in which two or more reactants combine into a single, more complex product.
  10. 18. A gain of electrons in a chemical reaction.
  11. 19. A loss of electrons in a chemical reaction.