A student was testing the time it takes to boil 4 liquids using the set up below. How could this student improve the experimental design in order to achieve better control factors?

To achieve the betterment in an experiment, we have to consider the factor like Quantity, Temperature, Specific heat capacity and heating method of the liquid.

Explanation:

when considering the quantity view it takes much time when there is a huge quantity. Thus, By varying the quantity, we can find the betterment in the experiment. when considering the temperature view it is a primary factor that decides the time of the experiment. By altering the temperature we can find a better more improvement when considering the specific heat capacity it is another primary factor before the temperature which shows that specific heat capacity that decides the amount of heat to be given for the process completion.