Across
- 5. a physical system that does not interact with any other system
- 7. a gentle sheen or soft glow, especially that of a partly reflective surface.
- 8. a solid substance that has a conductivity between that of an insulator and that of most metals
- 10. a metal made by combining two or more metallic elements
- 11. an article or substance that is manufactured or refined for sale
- 12. an element or substance that is not a metal
Down
- 1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
- 2. chemical process where a solid turns into a gas without going through a liquid stage
- 3. convert into vapor
- 4. the state or power of being reactive
- 6. when particles are big enough to eventually settle
- 9. a group atoms bonded together