Question

The boiling point of water is 100C.
(a) Once boiling starts, why does the temperature not rise accordingly even heat is supplied?
(b) Steam causes more severe burns than boiled water at the same temperature.

Answer 1

Answer:

Steam produces more severe burns than boiling water even though both are at 100oC because steam contains more heat, in the form of latent heat, than boiling water.

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Answer 2

Answer:

a) the heat energy supplied is used to break bonds between water molecules to form steam, and isn't used to increase the kineitc energy (and therefore the temperature) of the water

b)steam, although at the same temperture as water (same kinetic energy), has more potential energy than water, as molecules in steam are further apart...so overall, steam has more internal energy (which in simple words is total kinetic energy+total potential energy); therefore steam causes more severe burns than water at the same temperature

hope u understand:)