Is Matter Around Us Pure?

Question 1

What are two types of matter?

Answer 1

Two types of matter are pure substance and mixtures.

Question 2

Define pure substances and its types

Answer 2

Pure substance is a matter containing only one kind of matter, and has constant chemical composition and characteristic properties.
It is divided into elements and compounds.

Question 3

Define physical and chemical properties of matter.

Answer 3

Physical properties of matter which can be observed without changing the chemical composition.
Chemical properties can be observed and measured by performing a chemical reaction.

Question 4

Characteristics of pure substance.

Answer 4

1.Homogenous throughout
2.constant appearance
3.Definite melting and boiling points.

Question 5

Define elements.