List five characteristics by which compound can be distinguished from mixtures
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20
It is a pure substance
It cannot be seperated by physical method
Elements loose their properties in compounds
Its composition is fixed
It has fixed melting point
MIXTURES:
It is a impure substance
Cant be seperated by physical method
Substances forming mixture retain their properties
It has no fixed composition
It has no sharp melting point.
It cannot be seperated by physical method
Elements loose their properties in compounds
Its composition is fixed
It has fixed melting point
MIXTURES:
It is a impure substance
Cant be seperated by physical method
Substances forming mixture retain their properties
It has no fixed composition
It has no sharp melting point.
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4
One way of classifying matter is as element, compound or mixture.
An element contains only atoms with the same number of protons, and hence the same atomic number (although they may have different mass numbers, and should not be referred to as 'identical').
A compound contains atoms of two or more different elements that are chemically combined to form a substance whose physical and chemical properties are different from those of the constituent elements, although determined by them.
A mixture contains multiple elements or compounds that are mixed together but not chemically bonded. The components can be separated by physical means.
An element contains only atoms with the same number of protons, and hence the same atomic number (although they may have different mass numbers, and should not be referred to as 'identical').
A compound contains atoms of two or more different elements that are chemically combined to form a substance whose physical and chemical properties are different from those of the constituent elements, although determined by them.
A mixture contains multiple elements or compounds that are mixed together but not chemically bonded. The components can be separated by physical means.
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