Question

1. What do you understand by the term “A pure substance.”?

Answer 1

Hey mate!!!

Scientifically, pure substance means substances that are made up of same elements. Which means that they are not made up of different elements joint together.

For ex, water is mixture because it is made of Hydrogen + Oxygen gas. H2O

Where as oxygen gas is pure because it is made of 2 same atoms that is O2

Hope it helps dear friend ☺️✌️✌️

Answer 2

Answer:

Mark me as a brainleast

Defination-

Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.

Explanation:

*Characteristics-

1.Pure substances are mostly homogeneous in nature containing only one type of atoms or molecules.

2.These substances mainly have a constant or uniform composition throughout.

3.The substances have fixed boiling and melting points.

4.A pure substance usually participates in a chemical reaction to form predictable products.

Examples of Pure Substances

All elements are mostly pure substances. A few of them include gold, copper, oxygen, chlorine, diamond, etc. Compounds such as water, salt or crystals, baking soda amongst others are also grouped as pure substances.