Q33 of 160 Page 36

Which contains more heat, 1 kg of water at 100°C or 1 kg of steam at 100°C? Give reason for your answer.

1 Kg of steam at 100°C has more heat than water at the same temperature because when water changes into steam, it absorbs latent heat, but when steam condenses to form water, an equal amount of latent heat is given out.


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31

Why does steam cause more severe burns than boiling water?

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Which contains more heat,1kg of ice at 0°C or 1 kg of water at 0°C? Give reason for your answer.

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Explain why, steam at 100°C is better for heating purposes than boiling water at 100 �C.

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Which produces more severe burns: boiling water or steam? Why?