Chemical Reactions and Equations
Balancing equations, types of reactions (combination, decomposition, displacement, redox) and oxidation/reduction.
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Take a full mock →Q1 · Chemical Reactions and Equations · EASY
In the reaction: 2Mg + O₂ → 2MgO, what type of chemical reaction is this?
Q2 · Chemical Reactions and Equations · EASY
When calcium carbonate is heated strongly, it breaks down into calcium oxide and carbon dioxide. This reaction is an example of which type of chemical reaction?
Q3 · Chemical Reactions and Equations · MEDIUM
Balance the following chemical equation: Fe + H2O → Fe3O4 + H2. What is the sum of all coefficients in the balanced equation?
Q4 · Chemical Reactions and Equations · EASY
In the reaction Zn + CuSO4 → ZnSO4 + Cu, zinc displaces copper from copper sulphate solution. This happens because:
Q5 · Chemical Reactions and Equations · MEDIUM
In the reaction 2PbO + C → 2Pb + CO2, which substance is oxidized and which is reduced?