A mole of ethyl alcohol weighs 46 g. How many grams of ethyl alcohol are needed to produce 1 L of a 2-millimolar (2 mM) solution?

How does the polarity of water contribute to its ability to dissolve so many substances?

What are nonpolar molecules that cluster away from water molecules called?

A molecule that has all nonpolar covalent bonds would be __________.

Sucrose has a molecular mass of 342 daltons. To make a 2-molar (2 M) solution of sucrose, __________.

Which of the following is a hydrophobic material? a. paper b. table salt c. wax d. sugar

Create a concept map to organize your understanding of the life-supporting properties of water. A sample map is in the answer section, but the value of this exercise is in the thinking and integrating you must do to create your own map.

DRAW IT Draw the hydration shells that form around a potassium ion and a chloride ion when potassium chloride (KCl) dissolves in water. Label the positive, negative, and partial charges on the atoms.

Most of the unique properties of water result from the fact that water molecules a. are the most abundant molecules on Earth's surface. b. are held together by covalent bonds. c. are constantly in motion. d. are polar and form hydrogen bonds.