END TERM EXAMINATIONS
END TERM 2 -2022
CHEMISTRY PAPER 2 (233/2)
FORM THREE (3)
TIME: 2 HOURS
Name …………………………………………….……… Adm. Number…………………………..
Candidate’s Signature ………………….…………….. Date……………………………………
Instructions to candidates
- (a) Write your name, stream, and admission number in the spaces provided above.
- (b) Answer ALL the questions in the spaces provided, and working MUST be clearly shown
- (c) This paper consists of 9 printed pages; Candidates should check the question paper to ascertain that all the pages are printed as indicated, and that no question is missing.
FOR EXAMINERS’ USE ONLY
QUESTION | MAXIMUM SCORE | CANDIDATE’S SCORE |
1 – 7 | 80 |
- The grid below represents part of the periodic table. The letters do not represent actual symbols of elements. Study the grid and use it to answer the questions that follow.
A | B | |||||||
C | D | E | ||||||
F | G |
- Name the chemical family to which element C belongs (1 mark)
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- Name the type of bond formed when element D reacts with oxygen (1 mark)
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- Write the possible formula of the compound formed between elements C and A (1 mark)
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- Comment on the melting point and boiling point of the compound formed in (c) above (2 marks)
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- Element Q is in period 3 and its stable ion is represented with the symbol Q3-
- i) Indicate, in the grid above, the most possible position of element Q (1 mark)
- ii) Write the electron arrangement of an atom of Q (1 mark)
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- How do the atomic radii of elements C and D compare? Explain (2 marks)
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- How do the melting points of elements B and G compare? Explain (2 marks)
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- Which element in the table is possibly the least reactive? Explain (2 marks)
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- The Solvay Process is a method used in the manufacture of sodium carbonate.