Science - Water and Milk

Today we started our Friday Science sessions with two experiments; one with water and one with milk.

We filled up a cup of water and covered it with a piece of plastic. Then turned it upside down and GUESS what, the water did not come out. The students discussed the idea of gravity to help them to understand what was happening. If air could not get in, the water did not come out. As soon as they shook their cups, air got in and gravity does it's thing!

Our second experiment was called 'Magic Milk'. We used milk, food colouring and a stick with diswashing liquid on it. We waved our 'magic wands' and put the stick in the milk to watch an amazing chemical reaction. There were lots of oooooooooo's and ahhhhhhhhhh's while the dishing liquid made the milk swirl and move in all directions.

The students discussed what was happening. The students decided there was something in the milk that made it react with the dishwashing soap. They brainstormed words like protein, calcium and fat. I was so impressed. They were right, when the dishwashing liquid touched the milk, it reacted with the fats. 

The soap molecules from the dishwashing liquid are trying to attach to the fat molecules in the milk which causes movement in the liquid as the molecules in the fat and soap bond together and expel the water and food colouring.

Check out our photos by clicking on the link-https://photos.app.goo.gl/5qS1nPT9mSk4PH1MA