Lava Lamps

In KS1 Science Club this week led by our Year 5 Science Ambassadors the children investigated the chemical reaction which happens when sunflower oil, water, food colouring and alka-seltzer are added together. Small bubbles of carbon dioxide are released which created the lava lamp effect. The children discussed what they thought was happening and experimented whether the reaction would change depending on the amount of alka-seltzer added. Here are the results.IMG_3433[1]

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