SSC MTS EXAM

Detailed explanation-1: -Iron, steel, and water are some of the examples of a pure substance. Air may be a homogeneous mixture that’s often considered to be a pure substance. As we know diamond, sucrose, honey, and air all are pure substances. Pure water has two hydrogens and one oxygen atom.

Detailed explanation-2: -Elements can NOT be separated into other types of matter (physically or chemically). Therefore, elements are pure substances. Ex: Hydrogen gas is a pure substance, as it is made up of only Hydrogen atoms or molecules. Carbon, gold, & nitrogen are other elements (pure substances).

Detailed explanation-3: -Compound. A pure substance, basically composed of two or more elements and chemically combined in a fixed proportion is called a compound. Therefore, water is a compound. It has two elements, hydrogen and oxygen, combined in a fixed ratio.

Detailed explanation-4: -Compound:a substance that is made up of more than one type of atom bonded together.