GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which statement best describes an element?
A
any combination of two or more atoms of different types
B
a pure substance made up of only one kind of atom
C
a substance containing only carbon atoms
D
any kind of crystal
Explanation: 

Detailed explanation-1: -An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.

Detailed explanation-2: -Elements are pure substances that cannot be broken down further by physical means.

Detailed explanation-3: -Compound. A compound is a pure chemical substance, but it is made from more than one type of atom, chemically bonded together. All pure substances are either elements or compounds.

Detailed explanation-4: -Pure substances are mostly homogeneous in nature containing only one type of atom or molecule. It consists of a single type of particle and is the same in chemical nature.

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