Freezing of liquids to solids is a _____________ change
Irreversible
Chemical
Physical
Permanent
Reaction between iodine and phosphorous is taken place by which method?
Heating
Mixing
Light
Electricity
Burning of candle is ____ change.
Both a and b
None of these
During the sublimation of Iodine what changes will you observe?
Both a & b
Rusting of iron is a ________________ change
Temporary
Reversible
Which can be determined by simple physical observations and measured without changing the composition of the substance?
Physical properties
Chemicalpropertics
Composition
Concentration
Glowing of can electric bulb is a ______ change.
When we heat the sugar what change will occur?
Heating of sulphur is a _________ change
A change in the mass of specific substances can takeplace in _____ change.
