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salt posts

Vinegar eggs and salty osmosis Activity

by Jasmine, 18 April 2019 | 3 comments

Hand holding a transparent egg shape orb.

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.

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Water on Mars? Super cool!

by David, 12 June 2015 | 1 comments

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. “Liquid water isn’t stable on the Mars surface because of the temperatures and the…

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Super quick ice-cream Activity

by Carol Saab, 18 July 2013 | 1 comments

Milo tin surrounded by ice in a larger sealed container

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.

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