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WorksheetsDIAGNOSTIC TEST - SK015
Total questions: 10
Worksheet time: 20mins
Which of the following statements is TRUE about the kinetic theory of matter?
The particles in liquids are packed closely together in an orderly manner.
The particles in solids move randomly.
The forces between the particles of gases are stronger than those of liquids.
The particles in solids are packed closely together in an orderly manner.
The nucleus of an atom contains
electrons only
neutrons only
both protons and neutrons
both protons and electrons
An atom of chlorine - 37 has 17 electrons. How many neutrons does an atom of chlorine -17 contain?
17
20
37
54
Isotopes are different atoms with the same number of
protons, electrons and neutrons
protons but different numbers of electrons
neutrons but different numbers of protons
protons but different numbers of neutrons
How many oxygen atoms have equal mass with two magnesium atoms?
[Relative atomic mass: O; 16; Mg, 24]
2
3
4
5
A container contains 6.02 x 1023 of gas particles. How many moles of gas are there in the container?
0.5 mol
1.0 mol
2.5 mol
3.0 mol
A substance has a molar mass of 34 g mol-1. What is the mass of 2.5 moles of the substance?
13.6 g
34 g
68 g
85 g
Which of the following has the same empirical formula with ethene, C2H4 ?
C3H8
C4H10
C5H10
C6H6
Which of the following is the formula of lead(II) nitrate?
PbNO3
Pb2NO3
Pb(NO3)2
Pb2(NO3)2
If the Avogadro number is represented by the letter m , what is the number of oxygen gas molecules, O2 found in a volume of 24 dm3 at room temperature and pressure?
m
2m
1/2m
m2
