Online Videos –
JC 2 Mid-Year Review
These videos of our regular classes are available to our regular class students.
Each lesson is broken up into a few videos. In the description below each video, you can look for the content or question that you would like to view or revisit.
JC2 Mid-Year Review (1) – Atomic Structure and Chemical Bonding
Video 1-1
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Physical property trends of Period 3 elements: atomic radius, ionic radius, 1st IE
Video 1-2
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Q1: 2nd IE trends
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Q2: Successive ionisation energies
Video 1-3
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Dot-and-cross diagrams and VSEPR shapes
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Q3: drawing dot-and-cross diagrams, and application of VSEPR theory
Video 1-4
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Q4, Q5: Shortcut method of drawing Lewis structures
Video 1-7
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Q9: explaining melting point trends
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Q10: question applying van der Waals (VDW) forces
Video 1-5
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Q6: determining intermolecular forces
Video 1-8
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Q11: answering solubility questions
Video 1-6
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Q7, Q8: Analysis of, and strategy for answering chemical bonding questions
Video 1-9
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Physical property trends of Period 3 elements: melting points, and electrical conductivities
JC2 Mid-Year Review (2) – Chemical Energetics
Video 1-1
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Overview
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Experimental determination of enthalpy changes (Q1, Q2)
Video 1-2
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Shortcut equations for calculating enthalpy changes (Q4, Q5)
Video 1-3
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Bond energy method to calculate enthalpy changes (Q6, Q7)
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Algebraic method to calculate enthalpy changes (Q8, Q9)
JC2 Mid-Year Review (3) – Reaction Kinetics
Video 1-1
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Overview
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Shapes of conc-time graphs and rate-conc graphs
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Design of experiments to determine orders of reactions
Video 1-2
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Q1: Determining orders of reaction from conc-time graph; Drawing reaction profile diagrams
Video 1-3
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Q2: Determining orders of reaction from volume-time graph; Proposing mechanisms
Video 1-4
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Q3: Determining orders of reaction from product-time graph
Video 1-5
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Q4: Determining order of reaction of reactant in excess
Video 1-6
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Q5: Initial rates method
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Q6: Iodine clock experiment with initial rates table of volumes
Video 1-7
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Q7: Rates-conc graphs; Determination of activation energy.
JC2 Mid-Year Review (4) – Acid-Base Equilibria
Video 1-1
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Overview
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Q1: basic pH calculations
Video 1-4
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Q6: titration graph and pH calculations
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Q7: titration graph and indicators
Video 1-2
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Q2, Q3: buffer solutions
Video 1-3
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Q4: buffer solutions
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Q5: blood buffer system
Video 1-5
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Q8: pH calculations and sketching a titration graph
Video 1-6
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Q9: polyprotic titration graph and pH calculations
Video 1-7
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Q10: Shortcut method for sketching polyprotic titration graph