Form Three Chemistry Midterm 2026 – Mvomero DC PDF
CHEMISTRY FORM THREE MIDTERM EXAMINATION 2026 – MVOMERO DISTRICT COUNCIL
SECTION C (30 Marks)
10.(a) (i). An atom is electrically neutral. Explain.
(ii). Briefly explain the correctness of the statement “an atom is the smallest particle of matter.”
(iii). Using Dalton’s atomic theory, explain the fact that potassium sulphate from India, Tanzania, and Germany has the same mass composition of potassium, sulphur, and oxygen.
(b). The atomic number of an element is 11. Predict with reasons:
(i). Number of its valency.
(ii). It’s group number and Period number.
(iii). The formula of its chloride.
(c). Explain the trend of the following along the period and down the group:
(i) Atomic radius.
(ii). Electronegativity.
11. Describe six (6) major changes that matter is likely to undergo in our daily life and state clear examples in each case.
Related Post: