Question

1. what percent of earths water is freshwater? only 3% of earths water is fresh; the other percent is salty 3. what is polarity? describe the polarity of water. it means part of the molecule is slightly positive and the other part 4. how could you demonstrate to a child that solid water is less dense than liquid water?

Explanation:

For question 2, the highlighted text states the percentage of Earth's freshwater. For question 3, polarity refers to a molecule having slightly positive and negative regions; water is polar with oxygen slightly negative and hydrogens slightly positive. For question 4, floating ice in water demonstrates solid water (ice) is less dense than liquid water as ice floats.

Answer:

1. 3% of Earth's water is freshwater.
2. Polarity is a molecule having slightly positive and negative parts; water is polar (oxygen slightly negative, hydrogens slightly positive).
3. Float ice in water; ice floats, showing it's less dense than liquid water.