Question

Which of the following describes water? A. Is liquid over a narrow temperature range; requires a small amount of energy per gram to raise its temperature B. Is liquid over a wide temperature range; requires a large amount of energy per gram to raise its temperature C. Has weak cohesive forces between molecules; is liquid over a wide temperature range D. Has strong cohesive forces between molecules; is liquid over a narrow temperature range

Answer 1

Answer for apex is B! (:
Is liquid over a wide temperature range; requires a large amount of energy per gram to raise its temperature

Answer 2

Answer: option B. Is liquid over a wide temperature range; requires a large amount of energy per gram to raise its temperature

Justification:

Let's review every given statement:

A. Is liquid over a narrow temperature range; requires a small amount of energy per gram to raise its temperature 
i) Water is liquid in a wide temperature range (depending of the pressure). At 1 atm the range is 0°C to 100 °C

ii) Water requires a large amount of energy per gram to raise its temperature. The amounf of energy required to increase the temperature of 1 gram of substance is called specific heat. Water has one of the largest specific heat which is a very important feature for the life. Since water can absorb large amounts of heat before changing its temperature, the temperatures of oceans keeps well and aquatic life is possible.

B. Is liquid over a wide temperature range; requires a large amount of energy per gram to raise its temperature 

The two points were discussed in the choice A, concluding that they are true. So this is the right answer.

C. Has weak cohesive forces between molecules; is liquid over a wide temperature range

i) Water has strong cohesive forces between molecules. The cohesive force is explained by the hydrogen bonds and manifested in the surface tension of water.

So, this option is wrong.


D. Has strong cohesive forces between molecules; is liquid over a narrow temperature range.

The first statement is true as explained above, while the second one was denied during the discussion of choice A. So, this option is also false.