Chemical Reactions and Heat

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Across
  1. 5. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
  2. 7. A change in matter that produces one or more new substances
  3. 9. a chemical reaction that releases energy to its surroundings
  4. 10. A subatomic particle that has a negative charge
  5. 11. Smallest particle of an element
  6. 13. A combination of 2 or more substance that are chemical combined
  7. 15. the property that describes how readily a substance combines chemically with other substances
Down
  1. 1. a property of matter that describes a substance's ability to participate in chemical reactions
  2. 2. A subatomic particle that has no charge and that is found in the nucleus of an atom
  3. 3. the process by which the atoms of one or more substances are rearranged to form different substances
  4. 4. two or more atoms held together by bonds
  5. 6. the ability of a substance to burn
  6. 8. A pure substance made of only one kind of atom
  7. 9. A reaction in which energy is absorbed
  8. 12. A combination of two or more substances that are not chemically combined
  9. 14. a quality or condition of a substance that can be observed or measured without changing the substance's composition