* The Reactivity Series: Copper sits higher than hydrogen in the reactivity series of metals. This series ranks metals based on their tendency to lose electrons and form positive ions. Metals higher in the series are more reactive.

* Displacement Reactions: Copper can displace hydrogen from acids. For example, copper reacts with dilute nitric acid to produce copper(II) nitrate, nitrogen dioxide, and water. This wouldn't happen if hydrogen were more reactive.

* Electrochemical Potential: Copper has a more positive standard electrode potential than hydrogen. This means copper is more likely to be oxidized (lose electrons) than hydrogen.

In summary: Copper's position in the reactivity series, its ability to displace hydrogen from acids, and its electrochemical potential all indicate that it is more reactive than hydrogen.