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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…

Animals that live in salty water have to control the amount of salt in their bodies, or they will not survive. But how do they do it? This activity will help show you.

By Fiona Midson and Beth Askham Here is ‘acute’ quiz for you to size up! Answer these questions to see if you are in shape.

It’s time for a clean start to the new year! Can you keep your score sheet clean and get 5/5?

This quiz explores one of our most enigmatic senses. Do have the answers you need to taste victory?

Here are two egg experiments in one! Turn your eggs rubbery by dissolving their shells, and then make one grow and the other shrink with the power of salt water.

It’s drier than any desert on Earth. On Mars, pure water exists only as a gas or a solid. Vast amounts of ice are found at the north and south poles and buried underground, but there’s not a drop to drink.

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.