Question

What is the purest form of matter that cannot be separated into different substances by chemical means:
(A) Electrons
(B) Molecules
(C) Elements
(D) Compounds

Answer 1

Hint :In order to answer this question, to know the purest form of matter that cannot be separated into different substances by chemical, we will first mention the form of matter and then we will discuss more about it.

Complete Step By Step Answer:
Elements are the purest form of matter that cannot be separated into different substances by chemicals.
An element is the simplest form of matter which cannot be split into two or more simpler substances by ordinary chemical methods because an element is formed of only one type of atom.
An element is a pure substance made up entirely of atoms with the same number of protons in their atomic nuclei, as defined by chemistry. Chemical elements, unlike chemical compounds, cannot be broken down chemically into simpler molecules. The atomic number (represented by the symbol Z) is the defining attribute of an element; all atoms with the same atomic number are atoms of the same element. Chemical elements make up the entirety of the universe's baryonic stuff. Atoms are rearranged into new compounds linked together by chemical bonds when various elements undergo chemical reactions. Only a few elements, such as silver and gold, may be found in relatively pure native element minerals uncombined. Almost all other naturally occurring elements exist as compounds or combinations in the Earth. Air is mostly made up of the elements nitrogen, oxygen, and argon, however it also contains carbon dioxide and water. Hydrogen and helium are the lightest chemical elements.
Hence, the correct option is (C) Elements.

Note :
To put it another way, a substance is a single pure form of matter. When we look around, we can observe that most of the substance around us is made up of combinations of two or more pure components, such as sea water, minerals, and dirt.