Physical Sciences Paper 2 (English)

Common 2017 — Grade 12 / Matric — Physical Sciences

Past Paper 2017 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 10 questions ⏱️ 2h 📄 15 pages 📝 83 items found 📚 4 topics

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This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.

Q2— Section header —

1.10\ in the ANSWER BOOK, for example 1.11 E.

1.1Air can be classified as a/an element compound homogenous mixture heterogeneous mixture (2\

1.2The graph below shows the heating curve of a substance. which pa f the graph does the substance gain kinetic energy? BC only CD only

1.3In which ratio will roup (I\ elements react with group (VI\ elements (2\

Q1— Section header —

1.4What is t he total number of nucleons in the ion of calcium hen calcium loses two electrons to form Ca (2\

1.5Which ONE of the following groups of elements show the CORRECT trend of the density of metals? Rb < K < Na < Li K < Na < Li < Li < Na < K < Rb

1.6A learner use the flow chart below to classify some examples of substances and What could substances and possibly Marbl Oil

1.7In a 20 g sample of molecules, which sample below has the greatest number of moles? (2\

1.8Carbon dioxide can change dir ectly from the solid phase to the gas phase. This process is known as ublimation vaporation ecomposition elting (2\

1.9

1.10All the soil on arth is known as the tmosphere iosphere ithosphere hydrosphere. (2\ [20]20

2.1rite down a substance from the list above that is the following

2.1olecular structure (1\

2.1etallic structure (1\

2.1ovalent network structure (1\

2.1An i onic network structure

2.2Draw the Lewis dot diagram for the CO molecule. (2\

2.3Identify the type of chemical bond in H (1\

2.4Draw the Lewis dot diagrams to show the formation of NaC (3\

2.5Study the models of compounds below and answer the q uestions that follow. Write down the Chemical name of compound

Q2— Section header —

2.7State how EACH of the following changes when liquid nitrogen changes into gaseous nitrogen . Write down

3.1Define the term ionisation energy (2\

3.2State the general trend in ionisation energy f rom left to right across a period the periodic table. (2\

3.3There is a drop in ionisation energy from beryllium to boron.

3.3.1Write down the sp notation for beryllium AND boron. (4\

3.3.2Explain this drop in ionisation energy. (3\ Is the following statement TRUE or FALSE ? If false, rewrite the

3.5Study the ionisation energ of the group (I\ element s in the graph above and answer the questions that follow

3.5.1Give the general name of the group (I\ elements. (1\

3.5.2State the trend in the eactivity of elements in group (I\ (2\

3.5.3Explain the reason for the trend in

Q3— Section header —

4.1certain element has two isotopes in nature. One isotope has an atomic mass of 106,9 amu percentage appearance

4.1.1Define the term isotope. (2\

4.1.2Calculate the relative atomic mass of element (5\

4.1.3Identify element

Q4— Section header —

4.2Complete the table below Write only the answer next to the question number (4.2.1

4.2.7ELEMENT ATOMIC NUMBER MASS NUMBER NUMBER OF PROTONS NUMBER

4.26] Hydrogen peroxide decomposes at room temperature according to the following balanced chemical equation (g\ 2H

5.1What does the (aq\ represent in the equation above? (1\

5.2Identify the type of reaction above. Choose between PRECIPITATION and REDOX. Give a reason for the answer. (2\

5.3Is the reaction an example of a physical chemical change? (1\

5.4Define the term one mole of a substance. (2\

5.5If 4 mole s of hydrogen peroxide decomposes, calculate the volume of gas formed at STP. (4\

5.6Calculate the number of oxygen atoms in H if 17 g of H decomposes. [14]14

Q5— Section header —

Q6— Section header —

6.1Study the balanced chemical equation of the reaction between sodium carbonate (Na \ and hydrochloric acid (HC and answer the questions

6.2reaction 10,6 g of sodium carbonate reacts completely with excess hydrochloric aci Calculate the molar mass of sodium carbonate.

6.2Calculate the initial number of mol of sodium carbonate. (2\

6.2Calculate the mass of CO produced during this reaction. (4\

6.2.4Calculate the mass of sodium chloride produced if 4, of carbon dioxide was produced at STP. (6\

6.3g of a sample of hydrated sodium carbonate was strongly heated until no further change in mass was recorded. On heating, all the water of crystalli ation evaporated a s follows: + xH Calculate the number of moles of w

Q7— Section header —

7.1Give a reason why the ammeter reading was initially zero. (1\

7.2Give ONE word/term for a solution that conducts electricity. (2\

7.3Write down a balanced chemical equation to show how Ag dissociate in water (2\

7.4Write down the following or the investigation above

7.4.1A hypothesis (2\

4.2Dependent variable (1\

4.3Independent variable (1\

4.4Controlled variable (1\

7.5Define the term anhydrous (1\

7.6If the mass of AgNO is 5,3 per spoon calculate the concentration of the solution after TWO spoons have been

7.7Can tap water be used for this experiment? Give a reason for the answer. (2\

7.8From the results, deduce the relationship between the ion concentration in the solution and its conductivity. (2\

7.9A learner accidentally drop ped hydrochloric acid into the solution.

7.9.1How this affect the ammeter reading? Write down only INCREASE, DECREASE or REMAIN THE SAME. (1\

7.9.2Explain the answer

Q7— Section header —

Q8— Section header —

8.1Which chemical would you choose to test for the presence of carbonates (CO (1\

8.2Use a balanced chemical equation to show the test for c arbon ates in

Q8— Section header —

8.3Both carbonates and sulphates form a white precipitate wit h the chemical in

Q8— Section header —

8.4Give the chemical name of the precipitate formed when the carbonate an d the

Q8— Section header —

Q9— Section header —

Topics Identified

MechanicsElectricityChemical BondingThermodynamics

Mark Allocation

Total150 marks

Sections20 + 18 + 14 + 9 = 61 marks

Paper information

SubjectPhysical Sciences

Year2017

SessionCommon

TypePast Paper

PaperPaper 2

LanguageEnglish

Pages15

Downloads7

Examination context

Decade2010s

Years ago9y

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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applying scientific principles

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performing calculations with correct units

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A practical revision approach

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