Physical or chemical change? what gave you the idea that it was such?

The answer to your question is Chemical change.

Explanation:

Process

Chemistry classifies changes in two types: physical and chemical changes.

Physical changes occur when matter changes its physical state. Examples are evaporation, condensation, solidification, etc.

Chemical changes occur when matter reacts with another substance and it changes its original composition, a new molecule is formed.

From the description given we conclude that is is a chemical change.

your answer would be “dry”

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.