1.
Diagram 1 shows the atomic model of an atom.
Which of the following scientists suggested the model?
A. 
B. 
C. 
D. 
2.
Diagram 2 shows the set up of apparatus to investigate the diffusion in a liquid. After a few hours, the whole test tube of water becomes purple in colour
Which of the following statements explain the observation?
A. 
Potassium manganate(VII) is denser than water.
B. 
Matter is made up of particles that expand uniformly
C. 
Matter is made up of particles that are moving randomly
D. 
Particles in potassium manganate(VII) move faster in water
3.
Which of the following solids changes to gaseous state when it is heated?
A. 
B. 
C. 
D. 
4.
Which of the following isotopes is used in archaeology?
A. 
B. 
C. 
D. 
5.
The following information is about atom A
What is the electron arrangement of atom A?
A. 
B. 
C. 
D. 
6.
The mass of two atoms of element X is equal to that of three atoms of sulphur. What is the relative atomic mass of element X?
[ Relative atomic mass of S = 32 ]
A. 
B. 
C. 
D. 
7.
What is the number of molecules in 1 mole of ammonia, NH3?
[Avogadro constant = 6.02 x 1023 mol-1]
A. 
B. 
C. 
D. 
8.
The chemical formula for aluminium sulphate is Al2(SO4)3. What is its relative formula mass?
[Relative atomic mass of O = 16, Al = 27 and S = 32]
A. 
B. 
C. 
D. 
9.
Table 1 shows part of the Periodic Table of Elements.
What are the electron arrangements for atom of elements X and Y?
A. 
B. 
C. 
D. 
10.
A new element with symbol Nw is discovered. It has eight outer electrons in its atom. Which of the following statements is true?
A. 
B. 
Nw is a solid at room temperature
C. 
Nw reacts with sodium to form an ionic compound.
D. 
Nw is a good conductor of electricity in solid state.
11.
Which of the following metals burn with a very bright purplish flame in a gas jar filled with oxygen and produces a white residue?
A. 
B. 
C. 
D. 
12.
Chlorine is a Group 17 element.
Which of the following statements regarding chlorine is true?
A. 
It exists as a liquid at room temperature
B. 
It reacts with water to produce hydrogen gas
C. 
It reacts with iron wool to form iron(II)chloride
D. 
It reacts with potassium to form potassium chloride
13.
The atomic size decreases across the Period 3 because the
A. 
B. 
C. 
Number of neutrons increases
D. 
Number of shell occupies electron decreases
14.
The following information shows the properties of element Q.
Q is most probably
A. 
B. 
C. 
D. 
15.
An atom that receives an electron forms
A. 
B. 
C. 
D. 
16.
Oxygen atom is different from oxide ion because oxide ion has
A. 
More protons than oxygen atom
B. 
More neutrons than oxygen atom
C. 
More electrons than oxygen atom
D. 
More shells occupied with electron than oxygen atom
17.
Diagram 3 shows the set up of apparatus to determine the electrical conductivity of a substance X
The bulb lights up when X is
A. 
B. 
C. 
D. 
Potassium iodide solution
18.
Which of the following pairs of physical properties of compound W that is formed through transferring of electrons?
A. 
B. 
C. 
D. 
19.
The melting point of substance Z is -112oC and its boiling point is 78oC.
What is the physical state of substance Z at room temperature?
A. 
B. 
C. 
D. 
20.
Diagram 4 shows the curve obtained when a solid X is heated.
Which of the following statements are true about the curve?
A. 
B. 
C. 
D. 
21.
Diagram 5 shows the standard representation of beryllium atom.
What is the number of valence electrons of beryllium atom?
A. 
B. 
C. 
D. 
22.
Bromine-80 and bromine-81 are isotopes. Both isotopes have 35 protons.
Which of the following statements is true about the bromine isotopes?
A. 
Bromine-80 has less electrons than bromine-81
B. 
Both isotopes have the same number of neutrons
C. 
Both isotopes have the same chemical properties
D. 
Bromine-81 has more shells filled with electrons than bromine-80
23.
The relative molecular mass of a compound with formula Na2X2 O3 is 158. What is the relative atomic mass of element X? [ Relative atomic mass of O = 16 and Na = 23]
A. 
B. 
C. 
D. 
24.
The bromide of metal M has the formula MBr3 and sodium phosphate has the formula Na3 PO4 .What is the formula of the phosphate of metal M?
A. 
B. 
C. 
D. 
25.
Table 2 shows the nucleon number and the number of neutrons in of elements G and L.
Which of the following is true about elements G and L?
A. 
G is more reactive than L.
B. 
G is more electropositive than L.
C. 
Both dissolves in water to form an alkaline solution
D. 
Melting point of element G is higher than that of element L