Grade 12 Physical Science (PS) (Chemistry) November Paper 2 and Memo - 2023
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Grado
Physical Sciences
Institución
12th Grade
Grade 12 Physical Sciences November Paper 2 and Memo:
Total: 150 Marks.
This exam paper covers the following work:
Matter & materials(organic chemistry) | Chemical change(stoichiometry, acids & bases, reaction rate and equilibrium)
This is a practice paper with memorandum meant to test ...
GRADE 12 PHYSICAL SCIENCES
NOVEMBER EXAMINATION PAPER 2: CHEMISTRY
QUESTION 1
1.1 Various options are provided as possible answers to the following questions.
Choose the correct answer and write ONLY the LETTER (A-D) next to the
QUESTION NUMBER (1.1.1-1.1.10) on your answer sheet, for example 1.1.11. D.
1.1.1 Catalyst required for a thermal cracking:
A Strong acids
B No catalyst required.
C Pt, Ni or Pd
D FCC
1.1.2 The correct molecular structure for 3-methyl-2-pentanone:
A B
C D
1.1.3 Suffix for the homologous series of esters:
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Grade 12 November Paper 2 - Chemistry
, A -ane
B -oate
C -oic acid
D -al
1.1.4 The relationship between volume and pressure of a gas is:
A Constant
B Directly proportional
C Inversely proportional
D Independent
1.1.5 Organic homologous series with a double bond between oxygen and carbon:
A Alkenes
B Aldehydes
C Alkynes
D Alcohols
1.1.6 Which of the following will cause a DECREASE in reaction rate?
A Presence of a catalyst.
B Increase in the concentration of the reactant.
C Decrease in the concentration of the reactant.
D Alteration of electrical conductivity of reactant particles.
1.1.7 The product concentration of a chemical reaction is decreased. What would the
result be referring to Le Chatelier’s principles.
A The reaction rate of the forward reaction would increase.
B The reaction rate of the backward reaction would increase.
C The activation energy would decrease.
D The activation energy would increase.
1.1.8 Which of the following scenarios would NOT cause a change in the Maxwell
Boltzmann distribution of a gas?
A Temperature changes.
B Concentration changes.
C Adding a catalyst.
D Pressure changes.
1.1.9 Entropy is:
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Grade 12 November Paper 2 - Chemistry
, A minimum amount of energy required for a reaction to occur.
B the sum of a systems internal energy and a product of its pressure and
volume.
C the degree of disorder or randomness
D independent of the state of matter of the substance
[9x2=18]
QUESTION 2
A to F in the table below represent six organic compounds.
2.1 Write down the:
2.1.1 Letters that represent TWO organic compounds that are isomers of
each other. (1)
2.1.2 Type of isomers (CHAIN, FUNCTIONAL or POSITIONAL) identified
in QUESTION 2.1.1 (1)
2.1.3 GENERAL FORMULA of the homologous series to which compound
B belongs. (1)
2.1.4 NAME of the functional group of compound F. (1)
2.2 Write down the IUPAC name of:
2.2.1 Compound A. (3)
2.2.2 Compound B. (2)
2.2.3 Compound C. (2)
2.3 Compound F reacts with a carboxylic acid to form compound S in the
presence of a strong acid.
2.3.1 Write down the type of reaction that takes place. (1)
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Grade 12 November Paper 2 - Chemistry
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