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In which change heat produces? (chemical change or physical change)
Heat is produced during Chemical change.
Chemical changes occur when a substance combines with another to form a new substance, also called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions.
Characteristic of Chemical Changes are:
1. Change is permanent.
2. New substances are formed with entirely different physical and chemical properties.
3. Change can’t be reversed by simple physical method. Ex- cooking, baking.
4. Energy is released or absorbed during a chemical change.
Updated on: 10-Oct-2022
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