Chemical Reactions Challenge

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Across
  1. 2. A number placed in front of a chemical formula to balance a chemical equation.
  2. 4. A chemical equation in which the number of each type of atom is the same on both sides of the equation.
  3. 7. A reaction that absorbs heat from its surroundings.
  4. 8. A chemical reaction in which two or more substances combine to form a new compound.
  5. 9. A number written below and to the right of a chemical symbol in a formula.
  6. 13. The principle that mass is neither created nor destroyed in a chemical reaction.
  7. 14. A statement that describes the behavior of matter in a given situation.
  8. 15. A reaction that releases heat to its surroundings.
Down
  1. 1. Substances present at the start of a chemical reaction.
  2. 3. A chemical reaction in which a single compound breaks down into two or more simpler substances.
  3. 5. The measure of the amount of matter in an object.
  4. 6. Substance that speeds up a chemical reaction without being consumed.
  5. 10. Equation: Representation of a chemical reaction using symbols and formulas.
  6. 11. Energy required to start a chemical reaction.
  7. 12. Substances formed as a result of a chemical reaction.