Across
- 2. operations to which something is subjected to improve it.
- 8. is the process in which the elements of a system undergo chemical changes.
- 9. total change of an element
- 10. when two or more substances enter into a chemical reaction
- 11. hot and cold
- 12. chemicals substances
Down
- 1. liquid composed of chemicals.
- 3. important thing for life.
- 4. equations codes for substances
- 5. resulting from a chemical mixture.
- 6. change change of chemicals that cause an element to change shape.
- 7. communication between two people