Last seen: Nov 14, 2021
The radius of an atom is usually expressed in ‘nanometres’.
The size of an atom is indicated by its ‘atomic radius’.
Atoms are the building blocks of matter.
Law of Conservation of mass is the law of chemical combination illustrated by the statement.
Law of constant proportions is illustrated by this statement.
Law of conservation of mass and law of constant proportions are the two laws of chemical combination.
Maharishi Kanada suggested that all matter is composed of very small particles. He was given ‘parmanu’ for those particles.
The elements consist of atoms having fixed mass, and that the number and kind of atoms of each element in a given compound is fixed.
Atoms can neither be created nor destroyed is the result of law of conservation of mass given by Lavoisier.
John Dalton is the scientist who gave atomic theory of matter.
(a) Law of conservation of mass. (b) Law of constant proportions.
(a) Law of conservation of mass is proposed by Antonie Lavoisier (b) Law of constant proportions is proposed by Joseph Proust
The full form of IUPAC is International Union of Pure and Applied Chemistry.
Correct answer is (c) Air
Correct answer is (d) (i), (iii) and (iv)
Correct answer is (c) (i) and (iv)
Correct answer is (b) (i) and (iii)
Correct answer is (b) An impure substances
Correct answer is (c) Copper metal is ductile and has low electrical resistance
Correct answer is (b) First absorbed and then released