Question

Assertion :- an element is purest form of matter. Reason --- an element is made up of same kind of atoms .​

Answer 1

Answer:

Hint:Pure substances are substances that are only made up of only one type of particle or atom and have a fixed or constant structure. Pure substances mainly have a constant or uniform composition throughout

Complete step by step answer:

Let us discuss reason Assertion and Reason to find out the correct answer.

Pure substances are the substances that are made up of one type of atom of molecules. Thus Elements and compounds are the Example of pure substances. Example of elements and compounds

Elements; Carbon, Sulfur, Iron, Copper and aluminum

Compounds; Water (H2O), sodium chloride salt (NaCl) and methane (CH4) .

The physical properties of a pure substance include well- defined physical properties such as melting point, boiling points, density and Atomic size.

The properties of a compound are different from those of its constituent elements

Both the Assertion and Reason are correct statements but are not related to each other. So, the correct option is B.

Answer 2

Here both the assertion and reason are correct and reason is the correct explanation of the assertion.

An element constitutes of similar kind of atoms.They can't be further divided into more simpler substances by any chemical methods.