Physical Sciences Paper 2 (English)

Common 2016 — Grade 12 / Matric — Physical Sciences

Past Paper 2016 Grade 12 English Physical Sciences Hub →

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🎯 150 marks ❓ 10 questions ⏱️ 2h 📄 14 pages 📝 103 items found 📚 4 topics

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Q2— Section header —

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

1.1Which ONE of the following groups of elements are classified as halogens? Li, Na, K Ne, Ar, Kr , Br Si, Ge, As

1.2According to the kinetic molecular theory the particles of a solid vibrate in their fixed positions and have a fixed shape. are free to move and are compressible. are free to move and have a fixed shape.

1.3Which ONE of the following substances undergoes the process of sublimation? Water Wood Solid arbon dioxide Sodium chloride

1.4Which ONE of the molecules below c ontains the greatest number of atoms? (2\

Q1— Section header —

1.5he c hemical formula for sodium sulphate NaSO (SO Na(SO (2\

1.6Which ONE of the following electron configurations represents ion of an alkali metal (2\

1.7Which ONE of the following groups of elements show the correct trend the atomic radi of elements? (2\

1.8Consider the unbalanced chemical equation below. (s\ (g\ (g\ Which ONE of the sets of coefficients will balance the chemical equation? 4, 2, 3 1, 6, 4

1.9During the formation of an ionic bond electrons are ... shared equally shared unequally ransferred from a metal to a non metal

1.10The h ydrosphere is best described as the layer of rock found above the earth s mantle. the hot liquid rock located in the earth s outer core. the very dense rock located in the earth s inner core.

2.1Define the term pure substance (1\

2.2Complete the table below. rite down only the answer next to the quest ion number (2.2.1

2.2.4in your ANSWER BOOK SUBSTANCE ELEMENT/COMPOUND/ MIXTURE REASON Diamond

2.2.2Air

2.2.4(4\

2.3xplain why pots and pans are made of metal but the handles are made of plastic or wood (2\

2.4Write down the chemical formulae of the following compounds:

2.4.1Table salt (2\

2.4.2Calcium hydroxide (2\ [11]11

Q2— Section header —

3.1Write down the

3.1.1ependent variable (1\

3.1.2ndependent variable (1\

3.2Write down an investigative question for this investigation. (2\

3.3

3.4At wh temperature does substance 2 melt? (1\

Q3— Section header —

3.5Define the term boiling point (2\

3.6State the phase change t hat takes place at (1\ Temperature remains constant at

3.7Explain this phenomenon in terms of the spaces and the forces between the particles. (4\

3.8hich substance on the graph has the weakest intermolecular force between the molecules in the liquid phase Give a reason for the answer.

3.9Name the apparatus used to measure the average kinetic energy of the particles (1\

3.10

Q4— Section header —

4.1Define the term ioni ation energy (2\

4.2Use the information in the table to explain why:

4.2.1Metals form cations easily (2\

4.2.2Non metals form anions easily (2\

4.3Explain why the second ionisation energy of lithium is higher than its first ioni ation energy. (2\ [8]8

5.1Define the term isotope (2\

5.2Study the unknown elements below.

5.2.1Which of the lements above are isotopes of each other? (1\

5.2.2Write down the name of th isotope. (1\

5.3Calculate the relative atomic mass of copper by using the following isotopes of copper: Copper isotopes: Cu 69% and Cu

5.4Complete the table below . Write only the answer next to the question number (5.4.1

5.4.5ELEMENT MASS NUMBER ATOMIC NUMBER NUMBER OF PROTONS NUMBER OF NEUTRONS

5.4.4(5\ Ammonia (NH \ is manufactured using an industrial process known as the Haber process. It is used in the production of in organic fertilisers such as ammonium

5.5Write down the chemical formula for ammonium sul ate. (1\

5.6Name the type of bond between the atoms in the ammonia molecule. Give a reason for the answer. (2\

5.7Draw the Aufbau diagram (orbital box diagram\ for nitrogen. (2\

5.8How many valence electrons does nitrogen have? (1\

5.9Draw the Lewis dot diagram for the ammonia molecule. (2\ [21]21

Q5— Section header —

Q6— Section header —

6.1Which ONE of the reactions (i\r (ii\ is:

6.1.1decomposition reaction (1\

6.1.2synthesis reaction (1\

6.2What does the (g\ in reaction (i\ represent? (1\

6.3Write down the chemical formulae for the following

6.3.1luminium carbonate (2\

6.3.2luminium oxide (2\

6.4Write a balanced chemical equation for equation (i\. (2\

6.5Use the balanced equation in QUESTION

6.4to show th at mass is conserv in a chemical reaction (3\

6.6Calculate the percentage composition of hydrogen chloride (3\ [15]15

Q7— Section header —

7.1Define the term electrolyte (2\

7.2Use a chemical equation show how potassium chloride dissociates in water. (3\

7.3If 2 mol of potassium ions form during t he process used

Q7— Section header —

7.4Calculate the percentage potassium in potassium chloride. (2\

7.5How will an increase in the concentration of potassium chloride affect the conductivity of the electrolyte? Write down only INCREASE, DECREASE REMAIN THE SAME. (1\

7.6Give a reason for the answer QUESTION

7.5(2\ [12] 1112

Q8— Section header —

8.1The empirical formula of a certain compound is to be determined. On analysis of a sample of the compound it was found to contain 40% C, 6,6% H and 53,3% O.

8.1.1Define the term empirical formula (2\

8.1.2Determine the empirical formula of the compound. Show ALL calculations. (5\

8.1.3If the molecular mass of the compound is 60 mol , calculate the molecular formula of the compound. (3\

8.2The formula of the hydrated sodium carbonate is Na Calculate the number of moles of water of crystallisation ( \ in the compound. (4\ [14]14

Q9— Section header —

9.1Write down the values of temperature and pressure at STP.

9.2Calculate the following

9.2.1ass (in gram\ of hydrogen gas produced (5\

9.2.2olume (in dm of hydrogen gas produced at STP (3\

9.2.3ass (in gram\ of NaOH produced (4\

9.2.4oncentration o f the sodium hydroxide solution (3\ 12

Q10— Section header —

10.1Write down the correct term for the following description The insoluble substance that forms when some solutions react (1\

10.2Complete the following reactions by filling in the missing reac tants/products, where applicable:

10.2.1Test for s ulph ate ions: Step I: (aq\ BaSO (s\ NaC (aq\

10.2.2Test for hloride ions Step I: (aq\ s\ + KNO (aq\ Step II: (s\ o reaction

10.2.3What is the colour of the insoluble solid formed in step I of QUESTION

10.2.2(1\

10.3The diagram below represents components of the global system Which ONE of the symbols represents the

10.3.1tmosphere (1\

10.3.2iosphere (1\

10.3.3ithosphere (1\

10.4Name the THREE main processes involved in the transfer of water from one part of the water cycle to the next. (3\

10.5Describe ONE way in which the demand for water is currently met. (2\ [14] TOTAL: A: Soil Air Water14

Topics Identified

MechanicsElectricityChemical BondingThermodynamics

Mark Allocation

Total150 marks

Sections20 + 11 + 8 + 21 + 15 + 12 + 14 + 14 = 115 marks

Paper information

SubjectPhysical Sciences

Year2016

SessionCommon

TypePast Paper

PaperPaper 2

LanguageEnglish

Pages14

Downloads4

Examination context

Decade2010s

Years ago10y

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

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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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