Across
- 1. to reduce matter to liquid
- 2. the smallest unit of an element or compound
- 5. the smallest unit of an element
- 7. able to be dissolved or made liquid
- 9. capable of being reversed
- 11. water is made of hydrogen and this
Down
- 1. the substance of which all physical objects are made
- 3. to watch, view or note for scientific purpose
- 4. to turn or change to vapour
- 6. the amount of matter that something is made of
- 8. composed of molecules which move freely among themselves but do not separate like gases
- 10. to try or test to find something out