Exam preparation: Gr 12 PS

Force

Single object on horizontal plane with friction:

1. Strategy 11'06"

2. Solution 3'35"

Single object on inclined plane with friction:

1. Strategy 5'58"

2. Solution 2'37"

System of objects on horizontal frictionless plane:

• System of objects on horizontal frictionless plane: 11'51"

System of objects on horizontal plane with friction:

1. Strategy 9'37"

2. Solution 5'58"

Projectile motion

Nov 2019 P1 Question 3:

• Part 1: 3.1.&3.2. 5'01"

• Part 2: 3.4. 18'31"

• Part 3: 3.5. 6'34"

Momentum

• Nov 2020 P1 Question 4: 12'10"(Download question)

• Newton & Momentum Multiple Choice Question 2'39"

Work energy power

Nov 2020 P1 Question 5:

Download the mindmap used in these movies:

• Part 1: 5.1.-5.3. 12'30"

• Part 2: 5.4. Force focus 14'34"

• Part 3: 5.4. Energy focus: 18'56"

Worked example:

• Part 1: 8'45"

• Part 2: 7'18"

Doppler effect

Nov 2019 Question 6: Doppler 15'28" (Download question)

Electrostatics

Nov 2020 Question 7: Electrostatics: 20'40" (Download question)

Electric circuits

1. PS 2019 Nov P1: Movie (21'40")
   Question 8 & Memo

2. Battery internal resistance:

   1. Part 1: RIV (9'59")

   2. Part 2: V_cells (2'33")

   3. Part 3: Parallel (8'51")

3. Graph question: Worked example (7'10")

4. 2 Switch Question: Worked example (4'28")

Electrodynamics

• Nov 2019 Question 9:

• 9.1: Generator 10'57"

• 9.2: AC rms calculation 5'53"

Photoelectric effect

Graph worked example (P1, Nov 2019, Q 10) 14'17"
Download question and memo

Organic chemistry

Nomenclature

Nov 2019 P2 Q2:

• Part 1 of 3 (Q2.1) 2'34"

• Part 2 of 3 (Q2.2) 6'16"

• Part 3 of 3 (Q3.3) 9'21"

Homologous series:

• Haloalkanes and alkynes 9'27"

• Haloalkanes and carboxylic acids 8'08"

• Alkenes and alkynes 10'54"

• Esters and ketones 8'16"

Physical properties

Nov 2019 P2 Q3:

• Part 1 of 2 (Q3.1-3.3) 7'03"

• Part 2 of 2 (Q3.4.) 3'25"

Reactions

• Nov 2019 P2 Q4 12'12"

Reaction rate

Nov 2019 P2 Q5:

• Part 1 of 2 (Q5.1-5.2) 7'32"

• Part 2 of 2 (Q5.3-5.7) 6'24"

Chemical equilibrium

• Nov 2019 P2 Q 6:

1. Part 1 (6.1&6.2) 14'31"

2. Part 2 (6.3&6.4) 5'12"

• Feb 2017 15'17"

• Mpumalanga Sept 2017:

1. Qu 6.1 3'34"

2. Qu 6.2 22'00"

3. North West Sept 2017 14'49"

Acid-base reactions

Hydrolysis

• Hydrolysis 7'26"

Acid-base reaction

• 2018 calculation 9'28"; Question and Memo

Titration

• Titration concepts 10'32"

• 2019 calculation 18'14"; Question and Memo

Concentration, pH and Percentage Purity

• Nov 2020 P2 Q7.2 19'45"

• Past exam question:

  1. Part 1: Concentration and pH 5'02"

  2. Part 2: Percentage purity 11'17"

  3. Part 3: Overview and recap of percentage purity question 2'01"

Acid-base reaction, Titration & Percent Purity

1. 2020 Nov P2 Question 7.2 (19'46") Question & memo

Electrochemistry

• Copper electrolytic cell 12'20"

• Al - Y voltaic cell 7'32"

Sep 2019 E Cape P2 Q8&9: Questions and Memo:

• Q8 (Galvanic / Voltaic Cell) 14'48"

• Q9 (Electrolytic) 17'23"

Fertilisers

• PS Nov 2019 Paper 2 Question 10: 9'07"