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The science will amaze you if you just look close enough to things that surround you. What do you think would happen if you put hot and cold water in one container without mixing? Would "hot-air-balloon" principle work underwater where we heat water instead of air? We have done two cool experiments to answer those questions. Water changes density depending on the temperature. So much so that cold water would not mix with hot water if you place it carefully in one container. The molecules in hot

It's game on once again for density. Beautiful, isn't it? For step-by-step instructions go here: https://mel.sc/sSo/ For cool and safe experiments to do at home, sign up for MEL Science here: https://mel.sc/sSp/ | MEL Science

This colourful experiment will help you and your children understand density better. Density is the mass of a material per unit volume, and it is a fixed number for each material. The density of water is 997 kg/m³; however, we can increase it by adding salt and sugar to it. In this experiment, we were adding a different amount of salt to each glass of water. When the salt dissolves, it increases the mass of water without changing the volume very much, which means that the saltwater solution's de