Physical Sciences Paper 2 (English)

November 2022 — Grade 12 / Matric — Physical Sciences

Past Paper 2022 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 12 questions ⏱️ 3h 📄 4 pages 📝 69 items found 📚 6 topics

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2.1and

Q2— Section header —

Q1— Section header —

1.11E.

1.1Which ONE of the following terms describes hydrocarbons that contain only single bonds? Isomer

1.2Which ONE of the following combinations correctly indicates the STRONGEST intermolecular forces found in ethanoic acid and methyl propanoate respectively ETHANOIC ACID

1.3A test tube contains a liquid hydrocarbon. When romine water (Br is added to the

1.4Which ONE of the following statements is the CORRECT definition for the rate of a reaction?

1.5Consider the balanced equation for the reaction between magnesium powder and EXCESS dilute hydrochloric acid

1.7Which ONE of the following salts when dissolved in water will NOT

1.8A dilute acid is titrated against a potassium hydroxide solution , K OH(aq\ At the equivalence point the pH is 7. Which ONE of the following combinations correctly identifies the acid and the

1.9Which ONE of the following statements is TRUE for an oxidising agent? It gains electrons.

Q2— Section header —

2.1Write down the:

2.1.1Letters that represent TWO organic compounds that are isomers of each other (1\

2.1.2Type of isomers (CHAIN, FUNCTIONAL or POSITIONAL\

Q2— Section header —

2.1.3GENERAL FORMULA of the homologous series to which compound belongs (1\

2.1.4NAME of the functional group of compound (1\ 2. Write down the IUPAC name of: 2.

2.3Compound reacts with a carboxylic acid to form compound in the presence of a strong acid

2.3.1Write down the type of reaction that takes place. Compound has an EMPIRICAL FORMULA of C

2.3Write down the MOLECULAR FORMULA of the carboxylic acid

Q3— Section header —

3.1The melting points of some organic compounds are given in t he table below. COMPOUND IUPAC NAME MELTING POINTS

3.1.1To which homologous series do the above compounds belong? (1\ The melting points of compounds and

3.1.2Write down the c ontrolled variable for this comparison (1 The melting points of compounds

3.1.3Fully e xplain the difference in the melting points of these two compounds (4

3.2The table below shows the results obtained from an experiment to determine the vapour pressure of different STRAIGHT CHAIN primary alcohols at 300 K. ALCOHOL VAPOUR PRESSURE (kPa\ CH OH

3.2.1Define the term vapour pressure (2\

3.2.2Write down a suitable co nclusion for this investigation.

3.2.3Write down the IUPAC name of the alcohol with the HIGHEST boiling point.

3.2The experiment is now repeat ed at 320 K. Will the vapour pressure of each compound NCREASE,

Q4— Section header —

4.1Is compound PRIMARY, SECONDARY or TERTIARY haloalkane? Give a reason for the answer. (2 4.

5.1In which experiment, or , is the reaction rate higher? Use the collision theory to explain the answer

5.2The Maxwell Boltzmann distribution curves, and for two of the above experiment

5.3.1 Write down the volume of O (g\ed in the syringe. (2

5.3.2 Calculate the mass of water, H O( first 3,6 s. Take the molar gas volume to be 24 000

6.1State Le Chatelier s principle. At equilibrium

6.3How will the amount of S(g\ change this new equilibrium is established

Q6— Section header —

6.5If the concentration of CS (g\ CHANGES by dm

6.6The reaction rate time graph below represents further changes made to the equilibrium mixture. The volume of the container is kept constant.

6.6.1What do the parallel lines between and represent?

6.2What change was made to the equilibrium mixture at 6.

6.3Give a reason for the sudden change in the reaction rate at

Q6— Section header —

7.1Ethanoic acid is a weak acid that reacts with water according to the following balanced equation: CH

7.1.1

7.1.2Give a reason why ethanoic acid is classified as a WEAK acid.

7.1.3Write down the formulae of the TWO bases in the equation above

7.2

7.2.1Calculate the n umber of moles of sodium hydroxide in the flask (3\

7.2.2Concentration of the OH (aq\ in the mixture

7.2.3Initial concentration of the ethanoic acid solution

8.1A piece of zinc (Zn\is placed in a test tube containing an acidified permanganate solution, aq\ After some time, it is found that a redox reaction

8.1.1Write down the NAME or FORMULA of the reducing agent (1

8.1.2Refer to the relative strength of the OXIDISING AGENT to explain why a

8.2A standard electrochemical cell is set up as shown below.

8.2.1Write down the function of component (1\

8.2.2In which direction will electrons flow in the external circuit? Choose from Ni to Mn

8.2Calculate the initial emf of this cell. (4\

8.2Write down the balanced equation for the net cell reaction taking place. (3\ 8.

Q9— Section header —

9.1Define the term electrolysis (2\

9.2The graph below NOT drawn to scale, represents the change in the

9.2.1Write down the half reaction that takes place at electrode

9.2.2Total charge that flows through the cell during this time (3\

9.2.3Value of as shown on the graph (6\ [1 TOTAL:

Topics Identified

MechanicsElectricityChemical BondingOrganic ChemistryElectrochemistryThermodynamics

Mark Allocation

Total150 marks

Sections20 = 20 marks

Paper information

SubjectPhysical Sciences

Year2022

SessionNovember

TypePast Paper

PaperPaper 2

LanguageEnglish

Pages18

Downloads9

Examination context

Decade2020s

Years ago4y

SeasonSpring (SH)

Start daySaturday

Exam periodNovember 2022

Days since exam1,451

About Physical Sciences examination preparation

Grade 12 Physical Sciences combines Physics and Chemistry. Paper 1 covers mechanics, electricity, waves, and optics, while Paper 2 focuses on chemical bonding, organic chemistry, and electrochemistry.

Every available Grade 12 Physical Sciences past paper and memorandum is collected in the Physical Sciences hub at physical-science.freemode.co.za — browse all years, sessions and languages in one place.

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applying scientific principles

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