What makes a strong acid different from a weak acid?

Strong acids react faster whereas weak acids take time to react with any base.

Strong acids are good conductors of electricity on contrary weak acids are not too good as conductors of electricity.

Strong acid passes electricity faster whereas weak acids are slow conductors.

Strong acids are not edible but weak acids are edible.

Strong acids have ph value ranging between 0 to 3 but the ph value of weak acids ranges between 5 to below 7.

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.