On Food and Cooking

(Barry) #1
sodium. Distilled   water,  which   is  produced
by boiling ordinary water and collecting
the condensed steam, is fairly free of
impurities.

Liquid Water Is Slow to Heat Up Again
thanks to the hydrogen bonding between water
molecules, liquid water has a high specific
heat, the amount of energy required to raise
its temperature by a given amount. That is,
water absorbs a lot of energy before its
temperature rises. For example, it takes 10
times the energy to heat an ounce of water 1º
as it does to heat an ounce of iron 1º. In the
time that it takes to get an iron pan too hot to
handle on the stove, water will have gotten
only tepid. Before the heat energy added to
the water can cause its molecules to move
faster and its temperature to rise, some of the
energy must first break the hydrogen bonds so
that the molecules are free to move faster.
The basic consequence of this

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