by Daiana and Corina
Materials you will need: vinegar.a Bowl, washing powder
Take a spoonful of soap powder and place it in the bowl Add several drops of the vinegar onto the soap powder in the bowl.
This reaction becomes a bubbling froth that gives off carbon dioxide gas. Once it finishes frothing, it leaves behind a salt substance that is not edible (DO NOT eat this salt). This chemical reaction is caused by the vinegar acting as the acid and the soda is the base.
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