SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What are the smallest parts of pure substancesthat cannot be broken down intosimpler substances?
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Mixtures
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Elements
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Atoms
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Molecules
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Explanation:
Detailed explanation-1: -Pure substances have fixed physical and chemical properties. An atom is the smallest part of an element. Its structure determines the unique properties of the element.
Detailed explanation-2: -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-3: -Compounds are the substances which can be further subdivided into simpler substances by both chemical and physical methods.
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