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Frage		Antworten
pure substance Lernen beginnen		it is made up of only one type of atoms or molecules
about pure substances Lernen beginnen		it has fixed melting and boiling points. pure substance could be either compound or element.
element Lernen beginnen		it is a pure substance that is made up of only one type of atom.
about element Lernen beginnen		it cannot be broken down into any simpler substance physically or chemically. an atom is the smallest part of an element.
compound Lernen beginnen		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 Lernen beginnen		mixture is obtained when two or more pure substances are mixed in varying proportions without undergoing any chemical change
characteristics of mixture Lernen beginnen		there are 5 characteristics.
1st characteristic Lernen beginnen		mixture is made up of two or more types of substances
second characteristic Lernen beginnen		in the mixture of the constituents can be combined in any proportion
third characteristics Lernen beginnen		the particles of the constituents of a mixture are loosely held and easily identifiable
fourth characteristic Lernen beginnen		constituents of mixture reading their original properties
fifth characteristic Lernen beginnen		constituents of mixture can be separated by physical methods

pure and mixed substances