Physical Sciences Paper 2 (English)

Common 2015 — Grade 12 / Matric — Physical Sciences

Past Paper 2015 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 1 questions 📄 17 pages 📝 63 items found ∑ 1 math symbols 📚 3 topics

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Q2— Section header —

1.10\ in the ANSWER BOOK, for example 1.11 E. In which ONE of the following global systems are all living organisms found? Biosphere Lithosphere Atmosphere Hydrosphere (2\ During an experiment, a group of learners observe ice melting in a be

1.8Which ONE of t he following balanced equations represents a dissociation process? (aq\ (aq\ (aq\ (aq\ (aq\ H (g\

Q2— Section header —

2.1From the above table , write down An element A homogen ous mixture (1\

2.1A diatomic gas (1\

2.1

2.1A heterogen mixture (1\ The learners erform an experiment to separate a mixture of sand and sugar. The experiment done in three st as shown the diagrams below.

Q3— Section header —

3.1The table be low shows the boiling and melting points of substances to SUBSTANCE BOILING POINT

3.1.1Define the term boiling point (2\

3.1.2

3.1.3Which ONE of the following diagrams represents the PARTICLE ARRANGEMENT of substance at rite down only or (1\

3.2Refer to the kinetic molecular theory to fully explain the answer

Q3— Section header —

4.1.1Atomic number (2\

4.1.2Isotope (2\ Natural chlorine consists of 37. te down the sp (2\ The relative atomic mass of chlorine is 35,5. Calculate the in natural chlorine

4.3.1Number of valence electrons in a chlorine atom (1\

4.3ype of bonding in chlorine molecules Lewis structure for the chlorine molecule lcium reacts with chlorine to f m calcium chloride.

4.4.1Draw the Aufbau diagram for a calcium ion Write down the chemical symbols of the particles found in the calcium chlorid e crystal (lattice\. 10

5.1The first ionisation energy and the electron affinity of the period 3 elem ents are shown in the table below. ELEMENT FIRST IONISATION ENERGY

5.1Explain the difference between ionisation energy and electron affinity (2\

5.1.2Giv e a reason for the trend in the first ionisation energ as shown in the table (1\

5.1.3How will the SECOND ionisation energ of sodium compare to that of magnesium ? Write down only HIGHER THAN, LOWER THAN or

5.1Calculate the energy that will be needed to ionise 46 g Na(g\ (3\

5.1.5Which ONE of the above elements ha the greatest tendency to from negative ions Refer to the data in the table to give a reason for the answer. 11

5.2.1Write down the LETTER (S\ that represent (a\ A substance wi th a iant atomic lattice (1\ (b\

5.2.2Use Lewis structures to show the formati on of substance

5.2.3Substance undergo SUBLIMATION Represent this change with a chemical equation. 1] QUESTION (Start on a new page.\

6.1Name the type of chemical bonding in: .1.1 Magnesium ribbon .1.2 Magnesium oxide (1\ Is the reaction between magnesium ribbon and oxygen

Q6— Section header —

Q7— Section header —

7.1The above reaction is an example of an acid base reaction. Define the term acid base reaction (2\ The graph below shows the relationship between the volume

7.2From the graph, determine the volume of CO (g\ produced when 0,0 g of PURE CaCO (s\acts. (1\ A certain a nta

3.3Calculate t he volume of hydrochloric acid that will be neutralised by ONE antacid tablet. (5\ 3] Mass CaCO (g\ Volume

Q8— Section header —

8.1Many chemical reactions take place in aqueous solutions. Define the term aqueous solution. (1\

8.2Ionic solids dissociate when dissolved in water.

8.2.1Define the term dissociation. (2\

8.2.2Write down a balanced equation for the dis sociation of ammonium carbonate (NH in water. (3\

8.3The exp erimental setup below is used to compare the electrical conductivity of calcium chloride solution, (aq\ sodium chloride

8.3.1Identify the: (a\ Dependent variable (1\ (b\ Independent variable (1\ ater

8.3.2From the results, deduce the relationship between the ion concentration a solution and its c onductivity. (1\

8.3.3Use balanced chemical equations to explain why (aq\ is a stronger electrolyte than

8.4Indicate the type of reaction represent ed by each of the following equation Write down only RECIPITATION, REDOX or GAS FORMING

8.4.1Zn(s\ CuSO (aq\ Cu(s\ ZnSO (aq\ (1\

8.4.2\ + (g\ (1\

8.4.32Na \ + BaCO (1\

8.5Write down a balanced chemical equation for the following word equation: copper( II\ nitrate + water + nitrogen dioxide (3\ [19]19

Q9— Section header —

9.1Hydrogen, (g\ nitrogen (g\ react to form ammonia (g\ The

9.1.1Define the term mole. (2\

9.1.2How many moles of ammonia will be produced from mole of hydrogen gas? (1\

9.1.3Initially 10 cm of nitrogen and 24 cm of hydrogen are mixed in a container . The temperature and pressure remain constant. Calculate the volume of gas that will remain in the container after the reaction is completed.

9.1.4Number of moles of hydrogen gas reacted

9.1.5Volume of the nit rogen gas used at STP (2\

9.2When 207 g of lead combines with oxygen, 239 g of a certain oxide of lead is formed. Use a calculation to determine the formula of

10.2(1\

10.3Write down ONE advantage of process (1\

10.4The building of dams has several advantages for humans and the environment. State TWO of t hese advantages. (2\ [8] TOTAL: Ocean Clouds Water8

Mathematical Content

f(x)

Topics Identified

MechanicsChemical BondingThermodynamics

Mark Allocation

Total150 marks

Sections20 + 11 + 19 + 16 + 8 = 74 marks

Paper information

SubjectPhysical Sciences

Year2015

SessionCommon

TypePast Paper

PaperPaper 2

LanguageEnglish

Pages17

Downloads6

Examination context

Decade2010s

Years ago11y

Season—

Start day—

Exam period—

Days since exam—

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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For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

applying scientific principles

selecting appropriate equations

interpreting scientific information

performing calculations with correct units

explaining scientific reasoning

A practical revision approach

Create a one-page formula sheet and practice deriving units from first principles. The memorandum rewards correct formula identification, proper substitution, and accurate unit handling.

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