# [J2] Lesson 40 (Thermal Physics Grade A Lesson 1 + Grade A Questions – Calculus L3 + Grade A Qns (Ionic Equilibrium) L2)

[J2 Physics PMCians] Thermal Physics (Grade A) Revision

What we did in 2 hours:

This week, we completed our Grade A questions series, ending with Thermal Physics.

In this topic, we reviewed the 3 important concepts:

1) Q=mc(DT) and Q=mL

2) Ideal gas equation of states (pV = nRT), and related equations,

3) First law of Thermodynamics, DU = Q + W

Example of a complete Cycle

What you take home:

Thermodynamics Grade A Test 1 solutions  (for reference only)

https://tinyurl.com/yxlgzxls

https://tinyurl.com/y3oldg9z

Special Mention:

Next lesson onwards, we will begin our countdown to the A-level exams, by attempting Mock Papers, specially curated by PMC.

Please be reminded that we will be using the New and final booklet resource from next week.

Till we meet again, be safe and stay healthy!

From you friendly tutors,

Mr Sim & Mr Kwok 🙂

[J2 Maths PMCians]

What we did in 2 hours:

Continuing with our Grade-A Calculus practice, we tackled some interesting questions! We will continue to build up more exposure to different geometry problems, as these are often one of the bigger barriers in differentiation questions, like the similar triangle in the folded paper problem.

Additionally, some classic setting styles that have been in multiple and recent A-level papers:

1. The reverse factor formula and evaluating periodic sine/cosine values have appeared a few times in recent years
2. F-math in our H2 math! Ask your f-math friends about iterative integration, which is what we did in that question. The 2018 paper included f-math concepts too, but just like what we did, it can definitely be managed by our existing skills, follow the question instructions and do not panic 🙂

What you take home:

Term 4 Quiz L has been updated into the link. Quiz K solutions will be in the folder on Friday.

https://tinyurl.com/y4oyqdme

Special Mention:

More Calculus this week, followed by some Sequences & Series.

See You and Stay Healthy!

[J2 Chemistry PMCians]

What we did in 2 hours:

This lesson, we have completed our revision on Chemical Bonding, looking at the solubility of substances in water and its energy requirements. We have also went through several examples on the drawing of hydrogen bonds.

We moved onto Grade A Questions on Ionic Equilibrium, which includes acid base equilibria and solubility equilibria. These questions not only help push your concepts further, they will also help to reinforce the basic concepts.

Special Mention:

In the coming lesson, we will complete the grade A questions on Ionic Equilibrium. Do not forget about the additional lesson on Thursday (8 Oct. 4pm to 9pm) where we will cover Practical Experiments.

While this period is crucial, do not forget about your mental health and take a good break to reward yourself from time to time!

See you soon and take care!

Mr Leong