EVERYDAY SCIENCE

Detailed explanation-1: -Hydrogen is the chemical element with the symbol H and atomic number 1.

Detailed explanation-2: -A substance that cannot be decomposed by an ordinary chemical process is known as an element. It is the simplest form of chemical substance and all matter is composed of it. For example, Hydrogen (h), carbon (C), Nitrogen (N), etc.

Detailed explanation-3: -It is an elemental hydrogen, a gas molecular entity and an elemental molecule.

Detailed explanation-4: -Hydrogen is considered an element because: (i) Hydrogen cannot be broken into new substances by ordinary physical or chemical means i.e., by applying heat, light or energy. (ii) Hydrogen has one kind of atoms.

Detailed explanation-5: -A chemical symbol is a shorthand method of representing an element. Instead of writing out the name of an element, we represent an element name with one or two letters. As you know, the periodic table is a chemist’s easy reference guide.