CAIE IGCSE Chemistry 6.4.6 Oxidation in Terms of a Loss of Questions
Identify oxidation as electron loss, track oxidised species in ionic equations and write balanced oxidation half-equations.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- define oxidation as loss of electrons or an increase in oxidation number
- identify the oxidised species by finding the electron donor in an ionic equation
- write a balanced oxidation half-equation with lost electrons on the right
- explain oxidation of ions and electrodes using electron transfer
CAIE IGCSE Chemistry 6.4.6 Oxidation in Terms of a Loss of Questions question 1
The electrical energy, or voltage, of two simple cells is measured.
cell 1
cell 2
statement 1 The voltage of cell 1 is greater than cell 2.
statement 2 Zinc is more reactive than copper.
statement 3 Magnesium is oxidised in both cells.
statement 4 Magnesium atoms lose electrons to form magnesium ions.
Which option is correct?
A
All the statements are correct.
B
Only statements 1 and 3 are correct.
C
Statement 2 is correct and explains statement 1.
D
Statement 4 is correct and explains statement 3.
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