Moving Milk Mysteries

Every Friday we put on our lab coats and become scientists for the morning. We are learning how to make observations and predictions. For the next few weeks we are discovering how molecules behave. You can't see molecules but you can change them to observe their behaviour.

Last Friday we looked at molecules moving. We did this by colouring water molecules in some milk and then observing as we put drops of dishwashing liquid. We watched the water molecules getting moved around as the dishwash liquid collected up all the fat molecules.

Cool aye?

Then Luke C. asked "What if we used something else instead of milk?"

This Friday we tried cream, strawberry milk and oil.

The results? There was no reaction in the oil. This is because oil is all fat and no water. There was a VERY slow reaction in the cream. This is because there is very little water in the cream and not enough to be moved around easily. The strawberry milk had a reaction but the standard milk was the fastest. From our observations we could tell there was more fat in the strawberry milk than in the standard milk.




What will we find out next week?