Question

What is meant by substance?

Answer 1

Substance is nothing but a compound which has specific properties and composition. Substance is going to be made by combining so many atoms together. Without substances in nature nothing is going to exist.

Complete step-by-step answer: - In the question it is asked to write the details about substance.
- We can say that every pure compound or an element is called substance and they have definite mass and weight.
- Without mass and weight substances won’t exist in nature.
- By using physical processes we cannot subject substances to other kinds of processes.
- The substance should have definite weight, volume and mass.
- We can say substance is a pure form of a matter.
- A substance can be a compound or an element.
- For example silver, copper, gold metals are elements of nothing but substances.
- Compounds are different from substances because by combining different substances we will get the compounds with different properties.
- For example chloroform is a compound formed by the combination of three chlorine atoms and one hydrogen atom.
- The hydrogen and the chlorine are pure substances but they compound and form a compound having different properties from the substances.
- Therefore substance is a pure form of a matter that has definite composition and mass.

Note: Mixtures are compounds that have different compositions with so many elements. Therefore mixtures are not pure substances in nature. For example alloys are the best examples for mixtures not for substances.