chem 4.1

12345678910111213
Across
  1. 4. The numbers that are placed in fornt of chemical formulas are called?
  2. 8. A substance that undergoes a chemical reaction is called?
  3. 9. When a non-metallic oxide reacts with ___, the product is an acid.
  4. 10. A substance that is formed in a chemical reaction is called?
  5. 11. The law of ____ of mass states that in any chemical reaction, the mass of the products is always equal to the mass of the reactants.
  6. 12. This lists the chemical formula of each reactant on the left, separated by a + sign if more than one reactant is involved, followed by an arrow.
  7. 13. One contributor to acid rain is ___ ___ which forms when sulfur trioxide reacts with water.
Down
  1. 1. A compound breaks down into elements or other compounds.
  2. 2. A balanced __ equation reflects the law of conservations of mass.
  3. 3. When two or more elements or compounds combine to form a new substance.
  4. 5. What identifies the reactants and products of a chemical reaction?
  5. 6. Metal hydroxides belong to a group of compounds called?
  6. 7. When ___ ___ is heated to a high temperature, if forms dinitrogen monoxide & water according.