Metal to Add
Salt Solution
🔮 Predict before you react
Lock a prediction before you add the metal.
Observations
Add metal to solution to observe...
Aim: To observe reactivity differences between metals through displacement reactions.
Principle: A more reactive metal displaces a less reactive metal from its salt solution. E.g., Zn + CuSO₄ → ZnSO₄ + Cu
Reactivity Order: Mg > Zn > Fe > Cu > Ag
• Copper(II) sulfate is harmful if swallowed and an irritant — wash hands, do not taste.
• Silver nitrate is corrosive, stains skin/clothes black, and is toxic — handle with care and collect as silver-containing waste.
• Iron(II) and zinc sulfate solutions are irritants — avoid skin/eye contact; wear goggles.
• Metal pieces/foil can have sharp edges — handle with forceps.
• Copper and silver residues are heavy-metal waste — do not pour down the sink; use the labelled waste container.
Lock a prediction before you add the metal.