Chemistry spelling words

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Across
  1. 5. capable of being dissolved
  2. 7. a substance that undergoes a chemical change in any reaction
  3. 8. a rapid oxidation accompanied by heat and usually light
  4. 9. substances that cannot be separated into simpler substances by chemical means
  5. 10. opposite to exothermic
  6. 16. a chemical reaction in which an acid and a base interact with the formation of a salt
  7. 18. a pure substance composed of two or more elements
  8. 19. incapable of being dissolved
  9. 20. the smallest component of an element..
Down
  1. 1. a substance obtained from another substance through chemical change
  2. 2. formed of matter deposited in or by water
  3. 3. a reaction or process with the release of heat
  4. 4. the smallest physical unit of an element or compound
  5. 6. the separation of a substance into basic elements or substances
  6. 11. a substance produced by or used in a chemical process
  7. 12. the principal element of anything
  8. 13. a product of corroding as rust
  9. 14. the reciprocal action of chemical agents upon each other; chemical change
  10. 15. a compound usually having a sour taste
  11. 17. a substance that indicates the presence or concentration of a certain constituent