Same chapter3 marksDifficulty: Medium
Distinguish between an exothermic and an endothermic reaction, with one example of each.
Chemical Changes and Reactions
3 marksDifficulty: Medium
Name four types of chemical reaction and give one equation for each.
Original Khojo Papers practice question — not from a past board paper.
Answer
Direct combination: 2Mg + O2 → 2MgO. Decomposition: CaCO3 → CaO + CO2. Displacement: Zn + CuSO4 → ZnSO4 + Cu. Double decomposition: AgNO3 + NaCl → AgCl + NaNO3.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Neutralisation is a special case of double decomposition.
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