Question

4. Define :
(a) Elements (b) Compounds.
Give two examples for each of the following​

Answer 1

Answer:

elements : Group of atoms are called element

ex: hydrogen, helium

Compound ; Group of elements are called as compound

ex: H2O,CH4

Answer 2

ABOUT ELEMENTS

Element- Element is a pure substance made up of only one kind of atoms that cannot be converted into anything simpler than itself by any physical or chemical methods/process/steps.

Examples-oxygen, nitrogen, copper

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ABOUT COMPOUNDS

Compounds-Compounds are pure substance formed by the chemical combination of two or more elements in a definite proportion by mass. A compound can be broken down into simpler substances

Examples- water, marble, sugar