What happens when lemon juice is mixed with baking powder? Is it a physical change or a chemical change? How?

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Solution

When Baking powder is mixed with lemon juice, the gas evolved is CO2 . It's a chemical change since the two substances react to form a new one, and the change is irreversible too.

When baking powder is mixed with lemon juice, bubbles formed because of evolution of carbon dioxide gas. This is a chemical change, because in this reaction new substances are formed.

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