Which statement best explains the reason some insects can walk across the surface of a lake?

Where is the majority of Earth’s freshwater located?

Which type of substance can float in water?

What do scientists mean when they say that water is a polar molecule?

Which property of water best explains why the surface of the water is pulled up the sides of a graduated cylinder to create a meniscus(a curve in the water)?

Water circulating through pipes is often used to cool engines that produce large amounts of heat. Why is circulating water an effective method of cooling?

When water fills a submarine's floation tanks, the overall density of the submarine

If you pour water on to a sheet of wax paper, the water forms drops that are flat on the bottom and round on top. Why does the water arrange itself in this shape?

A beaker with 100 mL of water is placed on a hot plate and heated. The water boils at 100°C. At what temperature would 90 mL of water boil?

Approximately 70% of Earth's surface is covered with water. What percentage of this water is salt water contained in oceans?

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