Is it true that a substance undergoing changes only in physical properties is called physical change and when two substances react chemically to form new substances it is called chemical change?

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True

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Detailed Solution

The above statement is true.
A substance undergoing changes only in physical properties is called physical and when two substances react chemically to form new substances it is called a chemical change.
Physical changes to a substance, such as those to its shape, size, colour, or state, are referred to as such. Chemical changes occur when two chemicals interact chemically to create new substances with new chemical properties. For instance, cooking meals, burning fuel, etc. A chemical change can occur when something is burnt, fried, rusted, or rooted. Molecules such as melt, freeze, shred, and boil are examples of physical modifications. There is a possibility of reversing most physical changes if enough energy is available. Chemical changes can only be undone by a different chemical reaction.

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