Natasha Collier March 25 2025 PS 211 A/B Chapter 7 Vocab Puzzle

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Across
  1. 3. the speed of a reaction
  2. 4. A chemical reaction in which two or more reactants combine into a single, more complex product
  3. 7. A process that rearranges the atoms in one or more substances into one or more new substances
  4. 8. A substance that slows the rate of a reaction by reducing the effectiveness of catalysts
  5. 12. a substance that is formed during a chemical reaction
  6. 13. SI fundamental unit for the quantity of matter in a substance; a count equal to 6.022 x 10(exponent 23)
  7. 14. 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
  8. 15. A reaction in which the products can react together to re-form the original reactants
  9. 18. A chemical reaction that absorbs more thermal energy than it releases
  10. 20. A loss of electrons in a chemical reaction
  11. 21. A chemical reaction that releases more thermal energy than it absorbs
  12. 23. A combination of chemical formulas and symbols that models a chemical reaction
  13. 24. A chemical reaction in which a single reactant breaks down into two or more products
Down
  1. 1. a chemical reaction in which one element in a compound is replaced by another element; also known as a single-displacement reaction
  2. 2. a substance that helps a reaction happen faster but is not used up in the reaction
  3. 5. The principle that states that a chemical system in equilibrium will adjust its equilibrium will adjust its equilibrium position in such a way as to reduce the effect of any changes made to the system
  4. 6. the law that states that energy cannot be created or destroyed but only transferred between objects or transformed; also known as the first law of thermodynamics
  5. 9. The mass of one mole of a substance
  6. 10. A substance that enters into a chemical reaction
  7. 11. A chemical reaction in which two compounds swap cations or anions with each other; also known as a double-displacement reaction
  8. 16. A number placed in front of a chemical formula within a chemical equation that shows how reactants of a reactant or product are needed to balance the chemical equation
  9. 17. the minimum energy needed for a chemical reaction to occur
  10. 19. a gain of electrons in a chemical reaction
  11. 22. the state that occurs when forward and reverse reactions each happen at the same rate
  12. 23. An exothermic chemical reaction in which a fuel reacts with oxygen