Question

Grive three difference between pure and impure substances
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Answer 1

Answer:

Impure substances:

•A pure substance is a substance that is made up of just one chemical element or compound.

•They are all homogeneous i.e. their composition is uniform throughout the bulk.

•Examples: Elements and compounds

Impure substances:

•An impure substance is made of two or more elements or compounds that are not bonded together chemically.

•They may be homogeneous or hetergeneous i.e. their composition is not uniform throughout the bulk.

•They are all mixtures.

Examples: air, sea water, petroleum, a solution of sugar in water are all impure substances

Explanation:

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Answer 2

Answer:

Pure and impure chemical substances

A pure element or compound contains only one substance, with no other substances mixed in. Impure materials may be mixtures of elements, mixtures of compounds, or mixtures of elements and compounds

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