vocab 7

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