Which can be determined by simple physical observations and measured without changing the composition of the substance?
Physical properties
Chemicalpropertics
Composition
Concentration
A change in the mass of specific substances can takeplace in _____ change.
Chemical
Physical
Both a & b
None of these
Which depend on the composition or change in composition of a substance?
physical properties
Chemical properties
Density
Melting point
Rusting of iron is a ________________ change
Temporary
Reversible
Glowing of can electric bulb is a ______ change.
Freezing of liquids to solids is a _____________ change
Irreversible
Permanent
Heating of sulphur is a _________ change
Burning of candle is ____ change.
Both a and b
Which change is temporary and easily reversible?
In which change no new substance is formed ?
