Unit 6 and 7 Vocabulary

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Across
  1. 3. states that mass is neither created nor destroyed during a chemical reaction but is conserved
  2. 7. a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
  3. 8. a chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds
  4. 11. a statement using chemical formulas to describe the identities and and relative amounts of the reactants and products involved in the chemical reaction
  5. 13. a chemical reaction that involves the exchange of ions between two compounds and produces either a precipitate, a gas, or water
  6. 19. the study of quantitative relationships between the amounts of reactants used and products formed by a chemical reaction; is based on the law of conservation of mass
  7. 20. in a balanced equation, the ratio between the numbers of moles of any two substances
Down
  1. 1. a chemical reaction in which two or more substances react to yield a single product
  2. 2. a chemical reaction that occurs when the atoms of one element replace the atoms of another element in a compound
  3. 4. a formula that shows the smallest whole-number mole ratio of the elements of a compound, and might or might not be the same as the actual molecular formula
  4. 5. the minimum amount of energy required by reacting particles in order to form the activated complex and lead to a reaction
  5. 6. a formula that specifies the actual number of atoms of each element in one molecule of a substance
  6. 9. a compound that has a specific number of water molecules bound to its atoms
  7. 10. a percentage determined by the ratio of the mass of each element to the total mass of the compound
  8. 12. a reactant that is totally consumed during a chemical reaction, limits the extent of the reaction, and determines the amount of product
  9. 14. a reactant that remains after a chemical reaction stops
  10. 15. the ratio of actual yield to theoretical yield expressed as a percent
  11. 16. states that atoms, ions, and molecules must collide in order to react
  12. 17. the mass in grams of one mole of any pure substance
  13. 18. a solid produced during a chemical reaction in a solution