Tba Winny Sung Set 11

| Concept | Common Student Error | Correct Approach | | :--- | :--- | :--- | | | Drawing separate atoms without showing electron transfer. | Show transfer of electron(s) with arrow; include charges and full outer shells. | | Mole Calculations | Confusing $M_r$ (Relative Molecular Mass) with molar mass (g/mol). | Ensure units are consistent; convert mass to moles before using stoichiometric ratios. | | Redox | Identifying oxidation agents as substances that get oxidized. | The oxidizing agent causes oxidation and gets reduced (gain of electrons). |

In many educational contexts (particularly in regions utilizing the Singapore-Cambridge GCE curriculum or similar Commonwealth systems), "Set 11" usually denotes a specific practice paper within a series (e.g., Prelim Paper 1, Paper 2, or a specific topical revision set). tba winny sung set 11