Science in a Van

On Friday we had a real treat. Emily and Alan entertained us from Science in a Van. We learnt all about making mixtures using different liquids and substances. We learnt that some like to mix, while others like to separate. Then Alan did some amazing tricks with bubbles. He tried to get a bubble to reach the roof of the hall. He tried putting different substances(one of them was liquid nitrogen) inside the bubbles and when he used helium gas the bubbles rose to the ceiling. He talked about the different gases being heavier or lighter than air. Check out these cool photos.