【】Is potassium dichromate(K2Cr2O7) a Pure Substance?

 

Is potassium dichromate(K2Cr2O7) a Pure Substance?





Select one from the following options:
Is potassium dichromate(K2Cr2O7) a Pure Substance?


A)No 

B)Yes

C)Never

D) Sometimes

Answer:(B)
Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. Potassium dichromate (K₂Cr₂O₇) is a compound.So it is a pure substance.


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