GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Atoms are the smallest particles of matter that exist.
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Albert Einstein is the greatest physicist of the twentieth century.
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The universe is surrounded by a second universe, which cannot be seen.
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None of these
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Detailed explanation-1: -John Dalton’s Atomic theory states that matter is composed of exceedingly small particles called atoms.
Detailed explanation-2: -Dalton hypothesized that the law of conservation of mass and the law of definite proportions could be explained using the idea of atoms. He proposed that all matter is made of tiny indivisible particles called atoms, which he imagined as “solid, massy, hard, impenetrable, movable particle(s)".
Detailed explanation-3: -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-4: -In short, Thomson had discovered the existence of particles smaller than atoms. This disproved Dalton’s claim that atoms are the smallest particles of matter. From his discovery, Thomson also inferred that electrons are fundamental particles within atoms.
Detailed explanation-5: -Atoms are the smallest units of matter that have all the characteristics of an element. Atoms combine to form molecules. Atoms are composed of smaller particles known as protons, neutrons, and electrons.