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Delhi Public School, Kurukshetra

Class VI (holidays assignment)

What is a pure substance? Name two pure substances.



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Whole substance is homogeneous and propertie of substance are constant. pure substance is made up of one type of particle. mostly pure sub. are colour less in nature. 
     oxygen gas
     nitrogen gas

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Substances which constitute of only one kind of atom or molecule. Apure substance always has a fixed boiling point and melting point.

Ex- Water ( H2O)

Carbon ( C ) etc.

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