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Erupting Volcanoes

Our talented science ambassadors worked with acids and alkalis to create a chemical reaction.  We used vinegar, washing up liquid, water and baking soda to emulate how a volcano erupts!  The vinegar reacts with the bicarbonate of soda to produce a gas. The gas takes up a lot of space and finally builds up enough pressure to push out of the opening at the top of the volcano. 
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