pure and mixed substances

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término English
definición English

pure substance
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it is made up of only one type of atoms or molecules

about pure substances
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it has fixed melting and boiling points. pure substance could be either compound or element.

it is a pure substance that is made up of only one type of atom.

about element
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it cannot be broken down into any simpler substance physically or chemically. an atom is the smallest part of an element.

a compound is a pure substance that is made when two or more elements combine chemically in definite proportions. smallest particle of the compound is molecule.

mixture is obtained when two or more pure substances are mixed in varying proportions without undergoing any chemical change

characteristics of mixture
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there are 5 characteristics.

1st characteristic
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mixture is made up of two or more types of substances

second characteristic
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in the mixture of the constituents can be combined in any proportion

third characteristics
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the particles of the constituents of a mixture are loosely held and easily identifiable

fourth characteristic
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constituents of mixture reading their original properties

fifth characteristic
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constituents of mixture can be separated by physical methods


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