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Momin13

Answer: Chemical reaction involve two or more chemical substances. Chemical reactions result in new substance formation and are irreversible. Signs of chemical reactions include gas formation, heat release or absorption, precipitate formation, and color change.

A chemical reaction can be known to be occurring as it's typically accompanied by a physical change.

A chemical reaction refers to the process where one or more substances that are called reactants is converted to other substances that are called products.

It should be noted that when a chemical change is happening, there is a physical change that accompanies it. In such a case, there may be emission of light and heat. There may also be an evolution of gas or a change of color.

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