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