A
Hydrogen
B
Butane
C
Methane
D
Carbon Dioxide
Carbon dioxide (CO2) is stored in extinguishers in the liquid phase. It vaporizes when released thereby smothering a fire by excluding the air (oxygen) needed for combustion
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A
Camphor
B
Wood
C
Water
D
Nitrogen
Water is the only common substance that is naturally found as a solid, liquid or gas. Solids, liquids and gases are known as states of matter
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A
High heat capacity
B
Low heat capacity
C
High entropy
D
Low entropy
Water has a relatively high heat capacity, meaning it can absorb a lot of heat before its temperature rises. This trait allows the water in every cell of the human body to act as a buffer against sudden temperature changes. Blood, which is made largely of water, moves heat away from the extremities and toward the vital organs when it needs to conserve heat, it flows towards the skin surface to release excess heat when necessary, and it transports muscle heat away as needed. Water also helps expel excess heat from the body as water vapor from the lungs and sweat on the skin.
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