Baking soda

Baking soda is a chemical compound with the chemical formula NaHCO₃. It is also known as bicarbonate of soda. It is a powder used in cooking, primarily for baked goods such as scones (biscuits), and as a leavening (raising) agent for some types of cakes. It can also be used in small quantities for adults as a digestive medicine which, when mixed with water, can be drunk to relieve a sore stomach, wind, and indigestion.

It is also used in experiments, such as demonstrating a volcanic eruption; in this experiment, baking soda reacts with vinegar in a model volcano. When this happens, carbon dioxide (CO₂) gas is released, causing the contents to burst out through the top of the model, simulating an eruption.

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