1. knowledge about what products are produced in a chemical reaction is obtained by?
    Laboratory analysis
  2. Which observant does NOT indicate that a chemical reaction has occurred?
    Change in a total Mass of substances
  3. A solid produced by a chemical reaction in solution that separates from the solution is called?
    A precipitate
  4. After the correct formula for a reactant in an equation has been written ,the
    Formula should not be changed
  5. In writing an equation that produces hydrogen gas, the correct representation of hydrogen gas is
  6. what small whole number that appears in front of a formula in a chemical equation
    a coefficient
  7. To balance a chemical equation it may be necessary to adjust the
  8. according to the law of conservation of mass the total mass of the reacting substances is
    always equal to the total mass of the products
  9. which word equation represents the reaction that produces water from hydrogen and oxygen
    hydrogen plus oxygen yields water
  10. how would oxygen be represented in the formula equation for the reaction of methane and oxygen to yield carbon dioxide and water
  11. which of the following is a formula equation for the formation of carbon dioxide from carbon and oxygen
  12. For the formula equation 2Mg+O2->2MgO the word equation would be
    magnesium plus oxygen
  13. in an equation the symbol for a substance in water the solution is followed by
  14. A chemical formula written over the arrow in a chemical equation signifies
    a catalyst for the reaction
Card Set
chem chapter 8 review