AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A student took out a cup of frozen water from the freezer. At what temperature would the water begin changing from a solid to a liquid?
A
0
B
50
C
100
D
150
Explanation: 

Detailed explanation-1: -Fresh water transitions between the solid and liquid states at 32°F (0°C) at sea level.

Detailed explanation-2: -The water kept in the freezer cools down and after a point its state changes from liquid to solid (ice). The temperature at which this happens, is called the freezing point of water. This process of conversion of a substance from liquid to solid at freezing point is called freezing. Q.

Detailed explanation-3: -Answer: At temperatures above 32°F (0°C), pure water ice melts and changes state from a solid to a liquid (water); 32°F (0°C) is the melting point.

Detailed explanation-4: -The change from the solid state to the liquid state is called melting. The temperature at which a substance changes from a solid to a liquid is called the melting point. The melting point of water is 0°C.

Detailed explanation-5: -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.

There is 1 question to complete.