Chemistry Form 4 Experiment 5.1 Access

Ravi, whose fingers were always a little too eager, held a small coil of magnesium ribbon. It looked like a piece of dull, grey tinsel. “This looks harmless,” he smirked.

“Last one,” Ravi whispered, holding the magnesium ribbon with a pair of tongs. Puan Aishah wandered over. “Careful, Ravi. This one is dramatic.” chemistry form 4 experiment 5.1

He dropped the ribbon into the final bath of blue. Ravi, whose fingers were always a little too

The more reactive metal (magnesium or zinc) acts as the displacer, while the less reactive metal (copper) is displaced. The reactivity series is not just a list—it is a hierarchy of chemical power. “Last one,” Ravi whispered, holding the magnesium ribbon

In their lab books, under , Maya wrote the final line of the story:

“No reaction,” Maya noted, scribbling in her book. “Copper + copper sulphate → no change. That means copper is low in the reactivity series. It can’t kick itself out of its own salt.”

Lin dropped a small piece of copper wire into the blue liquid. They waited. One minute. Two. The copper sat at the bottom like a sleeping snake. The blue remained blue.