How come ice cream is soft when frozen but after you melt it and freeze it, it becomes ice.
In: 63
When ice cream is made, the churning process adds air into the mix, which mixes with the liquid to make tiny ice crystals. Once it melts, the air escapes, and refreezing the liquid without churning it again will allow those tiny crystals to grow into bigger ones. It’s the same as with snow, once it melts and refreezes it turns to ice on the road because all the little snowflakes melt into a slush and turn to ice. You can do an experiment at home to see this in action by making a granita: tale some juice and throw it in the freezer in a shallow bowl. Every hour or so scrape it with a fork and then put it back in the freezer – you’ll get a slushie after a few hours.
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