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Questions
21N.1A.SL.TZ0.6
How many p-orbitals are occupied in a phosphorus atom?
[1]
A. 2
B. 3
C. 5
D. 6
19M.1A.SL.TZ2.1
How many moles of magnesium hydroxide are produced with 0.50 mol of ammonia?
A. 0.25
B. 0.33
C. 0.75
D . 1.5
Mg 3 N 2 (s) + 6H 2 O (l) → 3Mg(OH) 2 (aq) + 2NH 3 (aq)
[1]
19M.1A.SL.TZ2.12
Which compound has hydrogen bonds between its molecules?
A. CH 4
B. CH 4 O
C. CH 3 Cl
D. CH 2 O
[1]
19M.1A.SL.TZ2.32
Which compound has the lowest boiling point?
A. CH 3 CH 2 CH 2 CH 2 CH 2 CH 3
B. CH 3 CH 2 CH 2 CH 2 CH 3
C. CH 3 CH(CH 3 )CH 2 CH 3
D. CH 3 C(CH 3 ) 2 CH 3
[1]
22M.1A.SL.TZ2.12
What is the main interaction between liquid CH 4 molecules?
A. London (dispersion) forces
B. Dipole–dipole forces
C. Hydrogen bonding
D. Covalent bonding
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[1]
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19M.1A.SL.TZ2.14
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Methane undergoes incomplete combustion.
2CH 4 (g) + 3O 2 (g) → 2CO (g) + 4H 2 O (g)
What is the enthalpy change, in kJ, using the bond enthalpy data given below?
[1]
A. [2(1077) + 4(463)] − [2(414) + 3(498)]
B. [2(414) + 3(498)] − [2(1077) + 4(463)]
C. [8(414) + 3(498)] − [2(1077) + 8(463)]
D. [2(1077) + 8(463)] − [8(414) + 3(498)]
19M.1A.SL.TZ1.3
What is the empirical formula of a hydrocarbon with 75 % carbon and 25 % hydrogen by
mass?
A. C 3 H
B. CH 2
C. C 2 H 6
D. CH 4
[1]
22M.1A.SL.TZ1.2
Which sample contains the fewest moles of HCl?
N A = 6.02 × 10 23 mol –1 .
Molar volume of an ideal gas at STP = 22.7 dm 3 mol –1 .
[1]
A. 10.0 cm 3 of 0.1 mol dm –3 HCl (aq)
B. 6.02 × 10 24 molecules of HCl (g)
C. 0.365 g of HCl (g)
D. 2.27 dm 3 of HCl (g) at STP
19M.1A.SL.TZ2.11
Which molecule contains an incomplete octet of electrons?
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[1]
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A. NF 3
B. BF 3
C. BrF
D. SF 2
19M.1A.SL.TZ1.1
Which diagram represents a heterogeneous mixture?
[1]
21N.1A.SL.TZ0.9
Which molecule has the weakest nitrogen to nitrogen bond?
[1]
A. N 2
B. N 2 H 2
C. N 2 H 4
D.
21M.1A.SL.TZ1.10
Which compound contains both ionic and covalent bonds?
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[1]
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A. MgO
B. CH2 Cl2
C. CH3 COOH
D. NaOH
22N.1A.HL.TZ0.17
At which temperature could Δ H , Δ S , and Δ G all be positive?
[1]
A. High temperatures
B. Low temperatures
C. Any temperature
D. No temperature
19M.2.SL.TZ2.5B(II)
(b(ii))
100.0 cm 3 of soda water contains 3.0 × 10 −2 g NaHCO 3 .
Calculate the concentration of NaHCO 3 in mol dm −3 .
[2]
19M.2.SL.TZ1.11B
(b)
The absorption spectrum of chlorophyll a is shown below.
Suggest how the combination of chlorophyll a and carotenoids is beneficial for
photosynthesis.
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[1]
22M.2.SL.TZ1.1G
(g)
State the types of bonding in magnesium, oxygen and magnesium oxide, and how the
valence electrons produce these types of bonding.
[4]
22M.2.SL.TZ2.A(I)
State the full electronic configuration of Fe 2+ .
[1]
21M.2.SL.TZ1.1A
(a)
Outline why metals, like iron, can conduct electricity.
[1]
21M.2.SL.TZ1.1C(II)
(c(ii))
State the full electron configuration of the sulfide ion.
[1]
19M.2.HL.TZ2.D(I)
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State what the presence of alternative Lewis structures shows about the nature of the
bonding in the molecule.
[1]
21M.2.SL.TZ2.C
Deduce the Lewis (electron dot) structure and molecular geometry of sulfur dichloride, SCl 2
.
[2]
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Markschemes
QuestionBank Test
21N.1A.SL.TZ0.6
D
19M.1A.SL.TZ2.1
C
19M.1A.SL.TZ2.12
B
19M.1A.SL.TZ2.32
D
22M.1A.SL.TZ2.12
A
19M.1A.SL.TZ2.14
C
19M.1A.SL.TZ1.3
D
22M.1A.SL.TZ1.2
A
19M.1A.SL.TZ2.11
B
19M.1A.SL.TZ1.1
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A
21N.1A.SL.TZ0.9
C
21M.1A.SL.TZ1.10
D
22N.1A.HL.TZ0.17
B
19M.2.SL.TZ2.5B(II)
«molar mass of NaHCO 3 =» 84.01 «g mol –1 » [✔]
«concentration =
3.0 × 10 − 2 g
84.01g mol
−1
× 0.100dm3 = » 3.6 × 10 –3 «mol dm –3 » [✔]
1
Note: Award [2] for correct final answer.
19M.2.SL.TZ1.11B
extends energy absorption spectrum «for photosynthesis» [✔]
22M.2.SL.TZ1.1G
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Award [1] for all bonding types correct.
Award [1] for each correct description.
Apply ECF for M2 only once.
22M.2.SL.TZ2.A(I)
1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 ✔
21M.2.SL.TZ1.1A
mobile/delocalized «sea of» electrons
21M.2.SL.TZ1.1C(II)
1s 2 2s 2 2p 6 3s 2 3p 6 ✔
Do not accept “[Ne] 3s 2 3p 6 ”.
19M.2.HL.TZ2.D(I)
delocalization
OR
delocalized π -electrons [✔]
Note: Accept “resonance”.
21M.2.SL.TZ2.C
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