Chapter 8 Chemistry Crossword

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Across
  1. 2. reaction / A ______ _______ is also known as a composition reaction.
  2. 5. / To balance numbers of atoms, add ______ where necessary.
  3. 6. reaction / A _______ _________ is indicated by writing two arrows pointing in opposite directions.
  4. 7. and formulas for the reactants and products.
  5. 9. reaction / A ____________ _________ is the opposite of a synthesis reaction.
  6. 11. / One of the compounds formed in a double-displacement reaction is usually a ____________.
  7. 12. series / The order in which the elements are listed in an _________ _________ are usually determined by single-displacement reactions.
  8. 13. reactions / In some _______-______ ________, one of the products is an insoluble gas that bubbles out of the mixture. Combustion reaction / A candle supplies heat to the hydrogen and oxygen in a balloon, triggering an explosive _______ ________.
Down
  1. 1. reactions / Many _____-________ take place in an aqueous solution.
  2. 3. / Oxides of the less-active metals, decompose into their elements when heated, which is called _____________.
  3. 4. equation / Represents the facts and shows the correct
  4. 8. equation / A _____ _________ has only qualitative (descriptive) meaning.
  5. 10. equation / Chemical Reactions are described by ______.