3. When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a
gas. What type of change is it? Explain.
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When baking soda (Sodium bicarbonate) is mixed with lemon juice(citric acid), bubbles are formed.
These bubbles are formed due to the evolution of carbon dioxide gas.
This is a chemical change.
In the change, the citric acid contained in lemon juice reacts with the baking soda or sodium bicarbonate) which results in the evolution of carbon dioxide gas.
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