On Friday the 11th of June we had a huge surprise Mrs Null said we were doing an experiment on air.For it we needed a bottle,balloon,cold water and hot water then we got started. First we put the balloon on the bottle and put it in cold water.We notecied that in cold water the balloon sucks up and in hot water it blows up. Then we tested it with a small a bottle and it went up faster it was fun!By Amelie and Zeffi
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