Experiment 4.2 Chemistry Form 4 [new] Jun 2026

Experiment 4.2 (Chemistry Form 4) successfully demonstrates that the reactivity of metals determines the outcome of a displacement reaction. Based on the observations of color change and solid deposition, the four metals can be arranged as . This experiment confirms the theoretical reactivity series and highlights the practical applications of Redox reactions in preventing rust and extracting metals.

The blue color comes from the hydrated Cu²⁺ ions. When Mg displaces Cu, the Cu²⁺ ions become solid copper metal (brown precipitate) and are removed from the solution. Meanwhile, Mg²⁺ ions (which are colorless) enter the solution, forming Magnesium Sulphate. experiment 4.2 chemistry form 4

During the experiment, students should follow proper safety protocols to ensure their safety and the safety of others: Experiment 4

#ChemistryForm4 #Experiment4_2 #Group1Reactivity #SPMChemistry #AlkaliMetals The blue color comes from the hydrated Cu²⁺ ions

I’ve written two versions: one for (most common) and one for Group 17 . Choose the one that fits your syllabus.

Which halogen is the strongest oxidising agent?