Matter around us pure Worksheet-1
Is matter around us pure Worksheet-2
A. carbon B. silicon C. nitrogen D. oxygen
A. phosphorus B. nitrogen
C. bismuth D. lead
Is matter around us pure Worksheet-3
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.
A. crystallisation B. hand prickingRead More...