Chem

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Across
  1. 2. the number and kinds of atoms must be the same on both sides of the reaction arrow
  2. 4. the substances formed in the reaction
  3. 8. is one in which a single compound breaks down into two or more elements or new compounds
  4. 9. the starting substances in the reaction
  5. 10. oxygen combines with a substance and releases energy in the form of heat and light
Down
  1. 1. two or more substances react to produce a single product
  2. 3. A reaction in which the atoms of one element replace the atoms of another element in a compound
  3. 5. a chemical equation is the number written in front of a reactant or product, describing the lowest whole-number ratio of the amounts of all the reactants and products
  4. 6. a statement that uses chemical formulas to show the identities and relative amounts of the substances involved in a chemical reaction
  5. 7. process by which one or more substances are rearranged to form different substances