Question

What is a chemical. How is it represented. Differentiate between a 'word equation' with a suitable example.

Answer 1

Dear Student,
In chemistry, a chemical or chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e. without breaking chemical bonds.

A chemical formula basically represent the chemical composition of a substance.

• In word equations, we use words to show what happens using words in a chemical reaction.

eg: Carbon + Oxygen = Carbon Dioxide

• In chemical equation, we use chemical symbols to show what happens in a chemical reaction.

eg: C + O2 = CO2

• Formula equation means same as chemical equation.

Regards