chemistry

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Across
  1. 4. a process where a substance loses electrons, gains oxygen, or loses hydrogen
  2. 5. something done, felt, or thought in response to a situation or event.
  3. 7. the smallest particle of a chemical element
  4. 9. potential of hydrogen
  5. 11. essential or characteristic part of something abstract.
  6. 12. a means of solving a problem or dealing with a difficult situation
  7. 13. different forms of the same element, characterized by having the same number of protons
Down
  1. 1. a substance with particular chemical properties
  2. 2. a substance that can neutralize acids
  3. 3. a substance that dissolves another substance
  4. 6. a substance that speeds up a chemical reaction without being consumed
  5. 8. a thing that is composed of two or more separate elements
  6. 9. an insoluble solid that forms and separates from a solution during a chemical reaction
  7. 10. a chemical process where a species gains electrons or has its oxidation state decrease,