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A physical change can be described as a change that doesn't affect the chemical composition of the substance, while a chemical chang

does alter the chemical composition of the substance. Place the following examples under the correct heading that describes the chang
that occurs.
physical change
chemical
physical and chemical change
:: ice melting :: nitrogen gas and hydrogen gas combine and form ammonia :: matter is conserved
:: change in shape or phase :: a raw egg is fried :: rusting of a nail

User BJV
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1 Answer

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14 votes

Final answer:

A physical change involves changes in properties of matter without altering the chemical composition, while a chemical change modifies the chemical composition of substances. Examples of physical changes include ice melting and a change in shape or phase, while examples of chemical changes include formation of ammonia from nitrogen gas and hydrogen gas, frying a raw egg, and rusting of a nail. Matter is conserved in both physical and chemical changes.

Step-by-step explanation:

A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. Examples of physical changes include ice melting, a change in shape or phase, and sorting a mixture of pennies and nickels. The composition of the substance remains the same in physical changes. On the other hand, a chemical change involves a transformation of one substance into another, resulting in a change in the chemical composition of the matter. Examples of chemical changes include nitrogen gas and hydrogen gas combining to form ammonia, a raw egg being fried, and the rusting of a nail. These examples demonstrate how chemical changes alter the chemical composition of the substances involved. Matter is conserved in both physical and chemical changes.

User MChan
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