Across
- 3. Removing any dirt or debris from something
- 5. to search into and explore very thoroughly
- 7. illnesses are caused by microorganisms in untreated or contaminated water.
- 10. is the process of removal of ions from the water
- 11. the process or result of oxidizing or being oxidized.
- 12. A group of chemicals that contains Chlorine
Down
- 1. a water treatment process that removes contaminants from water by using pressure to force water molecules through a semipermeable membrane
- 2. A substance made of only hydrogen and carbon.
- 4. a compound or substance that has been purified or prepared, especially artificially.
- 6. a process in which one substance or molecule is reduced and another oxidized; oxidation and reduction considered together as complimentary processes.
- 8. is an essential trace mineral not made by the body
- 9. found in the environment in amounts higher than what would be there naturally