Physical Sciences Paper 2 (English)

November 2025 — Grade 12 / Matric — Physical Sciences

Past Paper 2025 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 12 questions ⏱️ 3h 📄 20 pages 📝 69 items found ∑ 1 math symbols 📚 5 topics

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2.1and

Q2— Section header —

Q1— Section header —

1.11E.

1.1Which ONE of the following is the name of the functional group of propan arboxyl arbonyl ydroxyl ormyl (2\

1.2The organic compound C is converted to an alkane as shown by the reaction below Whi ch ONE of the following is a suitable catalyst for this reaction Lead latinum ydrog

1.3Which of the following statements ALWAYS apply to compounds that are structural isomers of one another? (i\ They belong to the same homologous series (ii\ They have the same structural formula (iii\ They have the same molecular formula

1.4

1.5The following reaction reaches equilibrium in a closed container (g\ The reaction rate versus time graph for the reaction is given below. What change s made to the system at time t

1.9galvanic cell consists of the following half cells: (aq\Fe (aq\ (aq\ (s\

1.10The set up for electroplating an iron medal with silver is shown in the simplified diagram below. Which ONE of the following combinations for the ANODE and REACTION AT THE

Q2— Section header —

2.1Write down the LETTER(S\ that represent(s\ EACH of the following:

2.1.1An alcohol (1\

2.1.2TWO compounds that are functional isomers of one another (1\

2.1.3TWO compounds that belong to the same homologous series (1\

2.2Write down the:

2.2.1IUPAC name of compound (3\

2.2.2IUPAC name of compound (3\

2.2.3IUPAC name of compound (3\

2.2.4STRUCTURAL FORMULAE of two STRAIGHT CHAIN positional isomers of compound (4\

2.3Compound (g\, reacts with oxygen, O (g\, according to the balanced equation: (g\ + 5O (g\ 4 Initially 8 cm of compound

2.3.1Write down the name for this type of reaction. (1\

2.3.2Calculate the TOTAL volume of the GASES present in the container at the end of the reaction. [22] Reaction mixture22

Q3— Section header —

3.2Identify the TWO homologous series to which these compounds belong. (2\ The following are the vapour pressures of these compounds at a given temperature Compound

3.3Write down the

3.3.1STRUCTURAL FORMULA compou nd

3.3.2IUPAC name for a possible compound (2\

3.4Write down the trongest type of Van der Waal's forces between the molecules

4.1ompound (1\

3.4.2ompound (1\ Which compound, or , has a higher boiling point? Give a reason for the answer by referring to the strength of the intermolecular forces. The boiling point of compound

3.1Define the term homologous series. (1\ 10

Q4— Section header —

4.1Study the three organic reactions and III below. Compounds and are organic compounds. are inorganic substances. onsider

4.1.1IUPAC name of compound (2\

4.1.2NAME or FORMULA of (1\

4.1.3TWO names for the type of reaction in reaction (2\

4.1.4NAME or FORMULA of (1\

4.1.5STRUCTURAL formula of compound (2\ Compound can be converted to compound in one step.

4.1.6State, b esides heat, ONE other reaction condition for this conversion. (1\

4.2A compound with the formula undergoes a cracking reaction according to the equation: (g\ (g\ The mixture of the two products is bubbled in bromine water, Br (aq\, in a darkened room.

4.2.1Define the term cracking. (2\

4.2.2State ONE change, besides a change in temperature, that will be observed when the mixture is bubbled in Br (aq\ (1\

4.2.3Write down the STRUCTURAL FORMULA of

4.2.4Which compound, or reacts faster with Br (aq\ Explain the answer. [17]17

Q5— Section header —

5.1Define the term reaction rate. (2\

5.2Carbon monoxide, CO (g\ , reacts with oxygen, O (g\ , to form carbon dioxide, (g\

5.2.1At which time, 10 or 30 , is the reaction rate higher? (1\

5.2.2

5.2.3Which reactant is in excess, CO or O (1\

5.2.4This reaction was repeated using a smaller sealed container. How will this affect the magnitude of the gradient of the graph at the beginning of the reaction ? Choose from INCREASE , DECREASE or REMAIN

5.3The reaction between sulphur dioxide, SO (g\, and oxygen, O (g\, takes place in a sealed container according to the balanced equation below 2SO (g\ O (g\

5.3.3catalyst anadium pentoxide is added to the reaction. Explain in terms of the collision theory why the rate of the reaction will increase. (3\

5.3.4How will this change affect the heat of the reaction? Choose from INCREASE , DECREASE or REMAIN

5.3.5Redraw the above graph in the ANSWER BOOK n the same set of axe s, draw the curve that will

6.1

6.1.1State Le Chatelier's principle. (2\

6.1.2A few drops of concentrated hydrochloric acid, The K values for the decomposition of at different temperatures are given in the table below. TEMPERATURE ( x 10 x 10 x 10

6.2.1Is the decomposition of an EXOTHERMIC or ENDOTHERMIC reaction? (1\

Q6— Section header —

6.2

7.1Phosphoric acid (aq\ is an example of an acid that can ionise in three steps as shown below (aq\ (aq\ (aq\

7.1.1

7.2.1Final concentration of the hydroxide ions in the flask (4\

7.2.2Number of moles of Ba(OH\ used to prepare the 100 cm solution (8\ [20]20

Q9— Section header —

9.1Is this an ELECTROLYTIC or a GALVANIC cell? (1\ When the switch is closed , it is found after hours that the amount of Cu (aq\

Mathematical Content

f(x)

Topics Identified

MechanicsChemical BondingOrganic ChemistryElectrochemistryThermodynamics

Mark Allocation

Total150 marks

Sections20 + 22 + 17 + 20 + 11 = 90 marks

Paper information

SubjectPhysical Sciences

Year2025

SessionNovember

TypePast Paper

PaperPaper 2

LanguageEnglish

Pages20

Downloads10

Examination context

Decade2020s

Years ago1y

SeasonSpring (SH)

Start dayWednesday

Exam periodNovember 2025

Days since exam353

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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