EVERYDAY SCIENCE

Detailed explanation-1: -mixtures have variable compositions, while compounds have a fixed, definite formula; when mixed, individual substances keep their properties in a mixture, while if they form a compound their properties can change.

Detailed explanation-2: -The substances in a mixture may be elements or compounds. The substances don’t combine chemically to form a new substance, as they do in a compound. Instead, they keep their original properties and just intermix. Examples of mixtures include salt and water in the ocean and gases in the atmosphere.

Detailed explanation-3: -In a mixture, each of the substances blended together keep their original properties. However, in a compound when the atoms of different elements bond together, a new substance is created with new properties.

Detailed explanation-4: -Mixtures can always be separated again into component pure substances, because bonding among the atoms of the constituent substances does not occur in a mixture. Whereas a compound may have very different properties from the elements that compose it, in mixtures the substances keep their individual properties.

Detailed explanation-5: -A heterogeneous mixture is a mixture of two or more chemical substances (elements or compounds) where the different components can be visually distinguished and easily separated by physical means. Examples include: mixtures of sand and water. mixtures of sand and iron filings.