Across
- 3. molecules move fast and always present in the air around us
- 5. 2 hydrogen atoms 1 oxygen atom
- 7. water in the air is changed into liquid
- 8. molecules are free to move they stay fairy close togather
- 10. reacts with oxygen to cause rust
- 12. changes from a liquid to a gas or vapor
- 14. water vapor and cloud droplets floating overhead
Down
- 1. added to drinking water to kill bacteria
- 2. hard water contains calcium and magnesium
- 4. moisture is carried trough plants
- 6. rain chemical pollution from factories power plants
- 9. runoff rain hits ground and begins to flow overland downhill
- 11. particles spread apart when freezing less dense
- 13. creates blue green stains and scale