AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
At what temperature does water Freeze?
A
0o C
B
100o C
C
32o C
D
-273o C
Explanation: 

Detailed explanation-1: -The temperature at which water freezes is at 0 degree Celsius, this is when water changes its’ phase from liquid to solid.

Detailed explanation-2: -We’ve all been taught that water freezes at 32 degrees Fahrenheit, 0 degrees Celsius, 273.15 Kelvin. That’s not always the case, though. Scientists have found liquid water as cold as-40 degrees F in clouds and even cooled water down to-42 degrees F in the lab.

Detailed explanation-3: -Ordinarily, the freezing point of water and melting point is 0 °C or 32 °F. The temperature may be lower if supercooling occurs or if there are impurities present in the water which could cause freezing point depression to occur.

Detailed explanation-4: -The freezing point of water, when liquid turns to solid, is 0 degrees Celsius. At this point, the internal energy of the water is reduced, the atoms become closely packed, and ice is formed. Internal energy is used to describe the energy associated with the random motion of molecules and the bonds between them.

There is 1 question to complete.