Question

elements and compounds ​

Answer 1

Answer:

Iron, gold, hydrogen and oxygen are some examples of substances made up of only one kind of atoms. They are called elements.

Answer 2

$An element is a substance that cannot be broken down into a simpler format. They are distinguished by a unique atomic number. ... Water is an example of a compound, a mixture of two or more elements, and is created when two hydrogen atoms bond to an oxygen atom$

Common examples include carbon, sulfur, oxygen, iron, copper, aluminium. Elements are represented by symbols. Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction.

@hrutuja14 here :)