define the term (a) Atom (b) molecule (c) Avogadro number (d) valency (e) molar mass
Answers
Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.
Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.
Atom : An atom is defined as the Smallest particle ( unit ) of an Element which may or may not have independent existence but always takes part in a Chemical Reaction
Molecules : A molecule is defined as the Smallest particle ( unit ) of Matter which exists independently and retains the Physical and Chemical Properties of the Matter.
Avogadro's Number : The number of units in one mole of any Substance is called Avogadro's Number
Valency : Valency is the number of Electrons an atom can donate or accept to form a Chemical Bond with another Atom.
It is the Combining Capacity of an Atom of an Element.
Molar Mass : The molar Mass is defined as the mass of 1 mole of any Substance.
Molar Mass = Mass * Number of Moles.
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