SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An element is a pure atom and a compound is a combination of atoms.
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An element is a pure substance and a compound is a combination of elements.
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Elements are mixtures and compounds are chemically combined.
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A element can be made of different atoms and substances while compounds are made of only two different elements.
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Detailed explanation-1: -Elements are pure substances which are composed of only one type of atom. Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions. There are nearly 118 elements (at present) of which nearly 94 occur naturally on Earth.
Detailed explanation-2: -A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds.
Detailed explanation-3: -Elements and compounds are both examples of pure substances. Compounds are substances that are made up of more than one type of atom. Elements are the simplest substances made up of only one type of atom.