Chapter 7 Vocab By Kanye Johnson 3/25/25 PS211-B

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