Chapter 4.2 and 4.3 Vocabulary

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Across
  1. 3. A chemical reaction may be represented using a chemical _____
  2. 4. A _____ equation shows the formulas of the reactants and products
  3. 5. Pure substances with different properties from the reactants
  4. 7. The law of _____ of mass states that the total mass of the products is always equal to the total mass of the reactants in a chemical reaction
  5. 9. A ____ covalent compound contains two non-metal elements joined together by one or more covalent bonds
  6. 11. A ______ chemical equation shows the identities of each pure substance involved as well as the matching # of atoms of each element on both sides of a chemical equation
  7. 12. A _____ equation is a set of chemical symbols and formulas that identify the reactants and products in a chemical reaction
Down
  1. 1. The small number written to the right of the symbol of an element
  2. 2. One or more chemical changes that occur at the same time are called a chemical _____
  3. 6. A _____ ion is composed of more than one type of atom joined by covalent bonds
  4. 8. Pure substances
  5. 10. Compounds composed of positive ions and negative ions are _____ compounds