GENERAL KNOWLEDGE

Detailed explanation-1: -An atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton’s Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible.

Detailed explanation-2: -Quark (noun, “KWARK”) Subatomic means “smaller than an atom.” Atoms are made up of protons, neutrons and electrons. Protons and neutrons are made of even smaller particles called quarks.

Detailed explanation-3: -We can also define the atom as the smallest unit of matter.

Detailed explanation-4: -An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.