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You would never add a heap of salt to your ice cream, but this tasty treat can be made by taking advantage of a chemical property of salt and a bit of elbow grease. Here’s how! Safety: The ice in this activity can get very cold, well below freezing. Take care not to touch it […]

Written by Matthew Dunn Illustrated by Alex Hallatt From absolute zero to the surface of the Sun, there’s a whole range of temperatures in our Universe. Let’s learn more!

To make ice-cream we use a whole bunch of different principles from physics and chemistry. In our video, we use salt to reduce the freezing point of water to make delicious, homemade ice-cream in minutes.