Crossword Puzzle 7A & 7B Key terms

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Across
  1. 2. mass - The mass of one mole of a substance.
  2. 3. equation - A combination of chemical formulas and symbols that models a chemical reaction.
  3. 6. reaction - A chemical reaction in which a single reactant breaks down into two or more products.
  4. 8. - A substance that is formed during a chemical reaction.
  5. 10. - An exothermic chemical reaction in which a fuel reacts with oxygen.
  6. 12. reaction - A chemical reaction in which one element in a compound is replaced by another element; also known as a single-displacement reaction.
  7. 13. reaction - A chemical reaction in which two or more reactants combine into a single, more complex product.
Down
  1. 1. - 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.
  2. 3. reaction - A process that rearranges the atoms in one or more substances into one or more new substances.
  3. 4. - A substance that enters into a chemical reaction.
  4. 5. reaction - A chemical reaction in which two compounds swap cations or anions with each other; also known as a double-displacement reaction.
  5. 7. - A loss of electrons in a chemical reaction.
  6. 9. - A gain of electrons in a chemical reaction.
  7. 11. - Sl fundamental unit for the quantity of matter in a substance.