Question

Explain how these properties of water are related to the phenomena described in the statements below. More than one property may be used to explain a given phenomenon. a. During the winter, air temperatures in the northern United States can remain below 0°C for months; however, the fish and other animals living in the lakes survive. b. Many substances—for example, salt (NaCl) and sucrose—dissolve quickly in water. c. When you pour water into a 25-ml graduated cylinder, a meniscus forms at the top of the water column. d. Sweating and the evaporation of sweat from the body surface help reduce a human’s body temperature. e. Water drops that fall on a surface tend to form rounded drops or beads. f. Water drops that fall on your car tend to bead or round up more after you polish (or wax) the car than before you polished it. g. If you touch the edge of a paper towel to a drop of colored water, the water will move up into (or be absorbed by) the towel.

Answer 1

A - In the liquid state water has a higher density more than in solid. Reason being ice floats in water, and first is formed on its surface and then in the bottom. Therefore, ice covers the water column as a blanket.

B - Water is a universal solvent for polar compounds.Then the property is being polarity.

C - high surface tension, cohesion, and adhesion.

D - There is higher heat of vaporization

E - It is cohesion

F - hydrophobic interaction, cohesion and adhesion.

G - Adhesion and capillary action.

Cohesion is termed as the attraction which is between molecules of the same substance.

Adhesion are termed as fibrous bands which are formed between organs and tissues. It often occurs as a result of injury during time of surgery.

Answer 2

A - In the liquid state water has a higher density than in the solid. Because ice floats in water, it forms first on its surface and then in the bottom. So, ice covers the water column as a blanket.
B - Water is a universal solvent for polar compounds. So, the property is polarity.
C - high surface tension, adhesion, cohesion
D - high heat of vaporization
E - cohesion
F - hydrophobic interaction, adhesion, cohesion
G - capillary action, adhesion.
Cohesion is attraction between molecules of the same substance. Adhesion is attraction between molecules of different substances.