Question

difference between element and compound

Answer 1

A compound contains atoms of different elements chemically combined together in a fixed ratio.
An element is a pure chemical substance made of same type of atom.
Distinguishing Feature-
Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds.
Elements are distinguished by their atomic number (number of protons in their nucleus).
Ability to Breakdown-
A compound can be separated into simpler substances by chemical methods/reactions.
Elements cannot be broken down into simpler substances by chemical reactions.
Types-
The list of compounds is endless.
There are about 117 elements that have been observed. Can be classified as metal, non-metal or metalloid.
Representation-
A compound is represented using a formula.
An element is represented using symbols.
Examples-
compound- Water (H2O), Sodium chloride (NaCl), Sodium bicarbonate (NaHCO3) etc.
element- Iron, copper, silver, gold, nickel etc.

Answer 2

compound is a pure substance formed by chemical combination of two or more element in a definite ratio by mass .
for example carbon dioxide is a compound made by chemically combining the two elements, carbon and oxygen .

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an element is the simplest pure substance that cannot be broken into two or more simpler substance by any physical or chemical method .

Nitrogen, Oxygen, nitrogen, carbon, copper, sodium clean, sulphur Mercury, silver and gold are the example of element .

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