Answer:
Chemical reaction.
Explanation:
Changes in color and temperature indicates a chemical reaction has taken place.
A chemical reaction involves two species combining to give a product. They are usually a product of chemical changes between two combining species.
In a chemical change;
- New kinds of products are formed
- There are heat changes accompanying such reactions.
- We can have color changes but it is not all indicative.
Not sure if this is what you’re looking for. Let me know if I can clarify anything.
Answer:
Temperature -SI unit :Kelvin
Explanation:
Kelvin is the SI unit of Temperature .
- Don't get confused and write Celsius as the SI unit .Celsius is not the SI unit .

Or

Lets take an example :-
Lets convert to Kelvin scale



- SI unit of Mass=kilogram(Kg)
- SI unit of Time=second(s)
- SI unit of electric current=Ampere(A)