Science week G5

Colour Changing Milk Experiment

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Milk is mainly made of water and the other big ingredient is usually fat (not all milk has the same amount of fat). The dish soap bonds with the fat in the milk. This bond is so strong that the water and food colouring are pushed out. The swirling effect is everything else moving around to make room for the dish soap and fat bond.

 

Making a Paper Clip Float on Water.

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It’s true, paperclips cannot float, but they can appear to float when suspended on the surface tension of water. Surface tension is like a “skin” on the surface of the water where water molecules bond together. With a steady hand, you can get a paperclip to suspend itself on the surface of the water.