LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Our cells do not instantly change temperature on a hot day. This is mostly because of water’s ____
A
Polarity
B
Cushioning
C
High Heat Capacity
D
Reactivity
Explanation: 

Detailed explanation-1: -Water has a higher specific heat capacity because of the strength of the hydrogen bonds. It requires a significant of energy to separate these bonds.

Detailed explanation-2: -One of water’s most significant properties is that it takes a lot of energy to heat it. Precisely, water has to absorb 4, 184 Joules of heat (1 kilocalorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.

Detailed explanation-3: -The high heat capacity of water also buffers the temperature of the earth we live in. The high heat capacity of water also allows humans to cool down by sweating because the heat absorbed when water evaporates allows the body to dissipate excess heat.

Detailed explanation-4: -A high heat capacity means that a substance can absorb a lot of heat before registering a change in temperature-think about how long it takes for a pot to get warm to the touch on the stove versus how long it takes the water inside to get warm.

There is 1 question to complete.