2.2 Properties of Water

Multiple Choice

Why is it important to understand the unique properties of water in biological systems?

• Because water is the most common solvent in living organisms

• Because water is only found in oceans

• Because water has no effect on chemical reactions

• Because water is not involved in cellular processes

Hotspot

Which are the negative sides of the hydrogen bonds?

Multiple Select

Which of the following are examples of attractive forces in water molecules?

• Polarity

• Hydrogen bonding

• Cohesion

• Adhesion

Multiple Choice

Which property of water allows it to form hydrogen bonds with other molecules?

• Polarity

• Cohesion

• Adhesion

• Density

Fill in the Blanks

The attraction between molecules of the same substance is called

.

Open Ended

What is the difference between cohesion and adhesion in water molecules?

Fill in the Blanks

Water in a solid state (ice) is

dense than in the liquid state.

Multiple Choice

Which statement best explains why water is able to dissolve both ionic compounds and other polar molecules?

• Because water is nonpolar and can mix with any substance

• Because water's polarity allows it to interact with charged and polar particles

• Because water is always in a liquid state

• Because water molecules are larger than most solutes

Multiple Choice

Which of the following substances is neutral on the pH scale?

• Stomach acid

• Tomato

• Pure water

• Toothpaste

Fill in the Blanks

Unbuffered base + acid =

pH

Fill in the Blanks

Fill in the blank: Water is often called the universal

because it can dissolve many substances.

Hotspot

Which of the following would be considered an ACID?

CHOOSE THREE

Open Ended

Reflecting on today's lesson about the properties of water, what is one unique property of water that you found most interesting and why?