Yes
physical change
Matter can undergo go both physical and chemical change.
When bromine water is added to paraffin, no visible reaction occurs. Paraffin is a non-reactive hydrocarbon compound, so it does not undergo a chemical reaction with bromine. The bromine remains as a colored solution with no change in the paraffin.
No. A paraffin test gathers evidence, it is not interrogation.
All substances have physical changes.
No. It is a chemical change.
Heterogenous mixtures undergo physical change (I THINK)
Hg is not a change, it is an element. It can undergo changes, both physical and chemical.
It is a physical phenomenon.
These physical properties depends on the water temperature.
Cooling, and changing from a liquid to a solid are physical changes, not chemical changes. The chemical composition of the paraffin does not change.
In a physical change, materials undergo a change in their physical state or appearance without changing their chemical composition. This can include changes in shape, size, phase (solid, liquid, gas), or state (melting, freezing, evaporating). Physical changes are usually reversible.