Question

Which of the following statement are true for pure substance? 1 pure substance contain Only one kind of particles 2 pure substance may be compounds Or mixtures 3 pure substance have the same composition throughout 4 pure substance can be exemplified by all elements other than nickel

Answer 1

Answer:

first option

Explanation:

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Answer 2

Pure elements are Substances which are made up of only one kind of atom. Air is a mixture of element and compound whereas alcohol in water is a mixture of compounds. CO2 is a pure compound and not an element.