Is Matter Around us Pure

Matter around us pure Worksheet-1

1. Match the column

2. Match the column

Answer:

1. A–T, B–S, C–R, D–Q, E–P
2. A–T, B–S, C–P, D–Q, E–R

Is matter around us pure Worksheet-2

1. The most abundant element in earth's crust is:

A. carbon           B. silicon            C. nitrogen        D. oxygen

2. Which of the following is a semi-metal?

A. phosphorus                               B. nitrogen

C. bismuth                                     D. lead

Is matter around us pure Worksheet-3

11. The cause of Brownian movement is :

A. heat changes in liquid state

B. convection currents

C. impact of molecules of dispersion medium on on dispersed phase

D. attractive forces between the particles of dispersed phase and dispersion medium.

12. A mixture of ammonium chloride and sodium chloride can be separated by :

A. crystallisation                           B. hand pricking