KIGUMO I SUB-COUNTY CLUSTER EXAMINATIONS 233/1 CHEMISTRY PAPER 1

KIGUMO I SUB-COUNTY CLUSTER EXAMINATIONS
233/1
CHEMISTRY PAPER 1
1. An ion of element P has 18 electrons, 16 neutrons and 15 protons.
(a) Write the electron arrangements of an atom of element P
(1mk)
(b) What is the mass number of element P
(1mk)
(c) State the period and group of the periodic table does element P is found.
Period: ………………………………….
Group: ………………………………….
(1mk)
2. (a) State Charles’s Law
(1mk)
3
(b) The volume of a certain gas was measured at 21C is 15.9cm . At what temperature will the volume
be doubled if pressure remains constant
(2mks)
3. The figure below shows an apparatus used to separate a mixture of water and octane