how does the specific heat of water compare with that of various metals? Why?

Expert Solution

Water has a very high specific heat capacity compared to solids and many other liquids.

Specific heat capacity is a measurement of how much heat has to be added to or released from a substance to change its temperature. Water has a very high specific heat capacity (4180Jkg?oC ). This means that 4180 J of heat has to be added to 1.0 kg of water to cause the temperature of that kg of that water to increase by 1oC.

This is a huge amount of heat required to make a very small change in temperature. Because of this, it takes a whole lot of heat to warm up the water; but once it is hot, it stays hot for a long time.

Solids tend to have a much lower specific heat capacity. Think of heating a pot of soup and stirring it with a metal spoon. If we leave the spoon inside the pot and come back 3 minutes later, the spoon will burn our hands, yet the soup is hardly warmed at all. This is because metal has a very low SHC (so little amounts of heat make big temperature changes) and water has a high SHC.

genius_generous answered 2 hours ago

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