Given below is a list of metals in the decreasing order of reactivity. Elements Q and Rare mystery metals.
K>Q > Ca > Mg > Al > Zn > R > Fe > Cu
Use your knowledge of reactivity of element to answer this question
Will Q react with cold water?

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.