Опыты с содой и лимонной кислотой ( уксус ). Experiments with soda and citric acid (vinegar).
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1
Games with children, experiment No. 1 soda and citric acid solution.
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2
Games with inflatable balls, experiment No. 2 soda and citric acid solution.
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3
Waterfall from foam. Experiment No. 3 soda + liquid soap and citric acid solution.
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