2. Cell Chemistry & Cell Components

Why are water-soluble vitamins less likely to be toxic compared to fat-soluble vitamins?

Water makes up about what portion of the total human body weight?

Water is a very versatile solvent because water molecules are __________.

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

Which of the following reservoirs contains the most water?

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.

Where is most of Earth's fresh water found?

Most of the unique properties of water result from the fact that water moleculesa. 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.

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?

Water assists the body in which of the following functions?

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.

What do you think the effect on the properties of water would be if oxygen and hydrogen had equal electronegativity?

Which of the following is a hydrophobic material?a. paperb. table saltc. waxd. sugar