Science Crossword

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