Question

Distinguish between pure and impure substances in tabular form

Answer 1

Answer:

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.

Explanation:

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Answer 2

Explanation:

Pure substances

Elements and compounds are pure substances.

1. A pure substance has uniform composition and properties in all its parts, as it consists of particles of only one kind. For example, sugar and salt are pure substances.

2. It has certain characteristics such as specific temperatures at which it melts and boils. For example, pure water boils at 100°C.

3. The constituents, which make up a pure substance cannot be separated by physical means.

Impure substances

Mixtures are impure substances.

1. A substance is said to be impure if it has particles of other substances mixed in it.

2. The constituents of impure substances may be present in any ratio.

3. The constituents of an impure substance retain their individual properties. For example, the properties of iron and sand do not change when they are mixed together.