Solution:
Concept- Adding calcium to water is a chemical change.Chemical changes occur when the nature of the original substance is altered to produce one or more new compounds. These modifications are significant and difficult to reverse.
Calcium addition causes a chemical change in the water since the end products are calcium hydroxide and hydrogen gas. In this instance, calcium is an element, water is a compound, and the two combine to form a new compound.
As a result, the reactants' chemical makeup changes. It is a chemical change as a result.
As a new compound is formed, there has been a chemical change.Hence, the correct answer is chemical change.
