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Answer: A chemical change occurs when a reaction yields a new material. A chemical shift, for example, results in the yeast that causes the bread to rise. In addition to chemical reactions, photosynthesis is an example of a process that takes place in plants.
Why is cooking of food a chemical change?
Why is cooking of food a chemical change? Learn about irreversible reactions and new substance formation for CBSE Class 7 Chemistry exams.
