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Grade 11 Physical Science (PS) (Chemistry) November Paper 2 and Memo - 2023 CA$4.22   Add to cart
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Grade 11 Physical Science (PS) (Chemistry) November Paper 2 and Memo - 2023
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  • Course
  • Physical Sciences
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  • 11th Grade

Grade 11 Physical Sciences November Paper 2 and Memo: Total:  150 Marks. This exam paper covers the following work: Chemistry - Atomic combinations | Intermolecular forces | Ideal gases | Chemical change | Types of reactions This is a practice paper with memorandum meant to test the stud...

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  • November 13, 2023
  • 17
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers

Subjects

  • physical sciences chemistry

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  • 11th Grade
  • Physical Sciences
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GRADE 11 PHYSICAL SCIENCES
NOVEMBER EXAMINATION PAPER 2: CHEMISTRY


SECTION A
QUESTION 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 in your answer book.

1.1 Which one of the following type of reaction occurs when electrons are moved between
substances?
A redox
B precipitation
C neutralisation
D decomposition


1.2 The minimum amount of energy required to start a reaction is known as the …
A catalyst
B reactant
C activation energy
D bond energy


1.3 The relationship between pressure and volume at constant temperature and a fixed amount
of gas is best described by?




1|Page www.summariessa.co.za Physical Sciences
Grade 11 November Paper 2 - Chemistry

,1.4 The geometrical shape of a methane molecule according to the VSEPR theory will be:
A Tetrahedral
B Trigonal bipyramidal
C Trigonal planar
D Bent

1.5 Sodium and chlorine react according to the balanced reaction below:
2Na + Cl2 → 2NaCl
Which of the following statements about the reaction will be correct?
A Chlorine is oxidised and therefore the reducing agent.
B Sodium is oxidised and therefore the oxidising agent.
C Sodium is oxidised and therefore the reducing agent.
D Chlorine is reduced and therefore the reducing agent.

1.6 A certain element has an electron configuration of 1s 22s22p6. This element will be in Group:

A 2
B 5
C 16
D 18

1.7 Which of the following represents 1 mole? The number of ...
A atoms in 6,02 x 1023 g of sodium.
B molecules in 22,4 dm3 of water at STP.
C protons in 1 g hydrogen gas.
D molecules in 34 g of ammonium gas.

1.8 Which of the following molecules have dipole-dipole forces?
A HF
B NaCl
C CH4
D He

1.9 Which of the following gases occupies the biggest volume at STP?
A 28g nitrogen
B 16g oxygen
C 8g helium
D 17g ammonia


2|Page www.summariessa.co.za Physical Sciences
Grade 11 November Paper 2 - Chemistry

, 1.10 The enthalpy for the reverse reaction of the reaction below will be:

A2 + B2 → 2C ∆ H = 123 kJ.mol-1

A -123
B +123
C -61,5
D +61,5 [20]



QUESTION 2
Consider the following compounds.
O2 ; H2O ; NH4+
2.1 Define the term molecule. (2)

2.2 Draw the Lewis structures for:
2.2.1 O2 (2)
2.2.2 H2O (2)

2.3 The NH4+ ions forms when ammonia combines with H+
2.3.1 Write down the NAME of the type of bond that the N-atom forms with the H + (1)
2.3.2 Draw the Lewis structure for the NH4+ ion. (2)

2.4 Which molecule is polar between H2O and O2? Explain your answer. (4)
[13]



QUESTION 3

The graph below shows the relationship between the boiling points of the hydrides of
the Group 16 elements and molecular mass.

Boiling point of elements with different molar mass




Molar mass (g/mol)




3|Page www.summariessa.co.za Physical Sciences
Grade 11 November Paper 2 - Chemistry

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