Question

chemistry class 9 chepter 2​

Answer 1

Answer:

matter around us is the 2nd chapter of chemistry class 9 ......

Answer 2

Answer:

Is Matter Around Us Pure Class 9- Chapter 2

Explanation:

We do know that matter is made up of particles which are arranged in a certain way. Gases particles are well separated and can freely move about, solids, on the other hand, have particles that are tightly packed, usually with no scope to move around.

Pure substances

Pure substances are elements or compounds.

Pure substances are elements or compounds.They are made up of only one kind of entity.

Pure substances are elements or compounds.They are made up of only one kind of entity.They cannot be broken down into simpler entities by chemical or physical methods.

Pure substances are elements or compounds.They are made up of only one kind of entity.They cannot be broken down into simpler entities by chemical or physical methods.They have a fixed composition.

Pure substances are elements or compounds.They are made up of only one kind of entity.They cannot be broken down into simpler entities by chemical or physical methods.They have a fixed composition.Example: Diamond, carbon dioxide.

Mixtures

Mixtures are formed by just mixing two or more pure substances (components) such that each substance retains its own chemical identity.