GATUNDU SOUTH JOINT EVALUATION TEST 2025 233/1 CHEMISTRY PAPER 1 - THEORY

GATUNDU SOUTH JOINT EVALUATION TEST 2025
Kenya Certificate of Secondary Education
233/1
CHEMISTRY PAPER 1 - THEORY
JULY / AUGUST 2025
INSTRUCTIONS
- Attempt ALL the questions in this paper.
- Electronic non-programmable calculators or mathematical tables may be used.
1. Name the processes which takes place when
(i) Iodine changes directly from gas to solid
(1 mark)
2+
3+
(ii) Fe (aq) to Fe (aq)
(1 mark)
(iii)White sugar changes to black solid when mixed with excess conc sulphuric (VI) acid
(1 mark)
2. Paper chromatography is a method of separating colours or dyes. What two properties should the
components of a mixture have that would make the separation possible.
(1mark)
3. The table below shows the pH values of solutions J K, L, M, and N