Matter

Question 1

Define pure substance

Answer 1

Matter which has distinct properties and composition doesn’t vary from sample to sample

Question 2

Element

Answer 2

A substance that cannot be decomposed into simpler substances.

Question 3

Define compound

Answer 3

A substance composed of 2 or more diff kinds of atoms.

Question 4

What is a mixture

Answer 4

Combination of 2 or more substances in which each substance retains its own chemical identity and can be separated from each other.

Question 5

Heterogenous mixture

Answer 5

Mixture.. which does not have uniform composition,properties and appearance throughout.