Water

5. Changing from a liquid to a vapor or gas
7. Moisture from rain and snow
11. Water that flows from the land to oceans and contains little to no salt
12. Controlled evaporation process by which plants lose water
14. Large land area in which water from rain and snow is absorbed into the soil to emerge as springs of water or artesian wells at lower elevations
15. Water in oceans and some inland lakes that contains heavy concentrations of salt
16. Living material, its excretions, and decomposing material

1. Positive ions
2. Drinkable and free from harmful chemicals and organisms
3. Water stored underground in natural aquifers
4. Measure of the total concentration of all dissolved ions in water
6. Negative ions
8. Elemental forms or groups that carry an electrical charge in solution
9. Water that flows up the mouth of a river with rising or inflowing ocean tides
10. A substance that dissolves or changes most other materials
13. Substances that dissolve readily in water to form simple ions