In science class, lab partners are designing an experiment that shows the important steps of the water cycle. For their experimental design, which of the following procedures could best be used to demonstrate the difference between condensation and evaporation?
A. To show condensation, the lab partners must increase the temperature within the cycle; to show evaporation, they must decrease the temperature. B. To show condensation, the lab partners must maintain a constant temperature within the cycle; to show evaporation, they must decrease the temperature.
C. To show condensation, the lab partners must maintain a constant temperature within the cycle; to show evaporation, they must increase the temperature.
D. To show condensation, the lab partners must decrease the temperature within the cycle; to show evaporation, they must increase the temperature.

100c is waters boiling point

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.