Across
- 2. the only metal which is liquid at room temperature
- 5. salt content naturally occurring in water
- 6. an indivisible and basic unit of matter
- 8. the mechanical process to separate solids from the fluids.
- 9. Breakdown of rock by physical and chemical change
Down
- 1. day 22nd April
- 3. an animal with backbone
- 4. dioxide used by plant/algae for photosynthesis
- 7. result of contamination.
- 8. The process through which a substance changes from liquid to solid