# [S3] Lesson 28 : Thermal Physics Part 2 + (EM) Properties of Circles + Periodic Table I Updates/Debrief

[S3 Physics PMCians]

What we did in 2 hours:

On the 9th, 11th and 12th, the S3PH has come together to cover the following during our weekly lesson:

1) Thermal Physics Lesson 2 – Heat Capacity and Latent Heat (Fusion and Vaporization)

Always remember:

1) There are THREE different formulas to calculate the thermal energy (Q): Q = m c (change in T),  Q = m l, and Q = P x t

2) Always make a point to list down the different Q needed by the question (e.g.: ice from – 5 deg C to 5 deg C will require you to tabulate three different Q)

3) When two bodies are interacting through heat transfer, the understanding of’ ‘heat loss by substance A = heat gain by substance B’ is very useful.

We will continue with the Thermal Physics Lesson 3 – Further application of Thermometry and Thermal Properties of Matter.

And we will be having a graded (and guided) assessment – Test C.

Special Mention:

This week begins a new normal in the Physics Cafe as you guys are given another option to attend our weekly lessons – the Onsite lessons.

It is indeed heartening to see many of you sitting in our Physical Classroom and having very lively discussions with us.

Should you have any questions, please feel free to send in your questions (and attempted workings) to 9100 1235. We will do our utmost to assist you in the questions.

Should you have any upcoming test or exam, and you would want to re-watch our video to recap on the techniques to solve questions and keywords to write in explanations, please feel free to approach of PMC HQ for more information.

Take care and Always with you,

The S3PH Tutors

(Mr Shane, Dr Li and Mr Gary)

[S3 Maths PMCians]

What we did in 2 hours:

This week, we covered Properties of Circles. We have explored many theorems in this chapter, and these theorems can be proven from properties of triangles. If you want to understand the proof of each theorem again, you may refer to the link:

http://www.timdevereux.co.uk/maths/geompages/index.php

More practise is required to be familiar with the theorems.

Please try the Takeaway Questions (Properties of Circles) as homework before referring to the solutions.

Special Mention:

Do you know that angles can be measured in different units? In the next lesson, we will be looking into Circular Measure. We will look at how angles in two different units can be converted, as well as some formulae. We will also learn how to key into the calculator in the correct mode to avoid getting a different answer. See you in class!

Your friendly PMC S3 Math tutors

[S3 Chemistry PMCians]

What we did in 2 hours:

We have started on the topic on Periodic Table and focused our attention on two big ideas of the chapter on metallic/non-metallic character (i.e. ability to lose/gain electrons) and reactivity (i.e. ease of gaining/losing electrons) to rationalise different observations in the reactivity of Group I metals.

Do begin your Take Home Package to page 5 to recap on the trends across period and down Group I.

Special Mention:

We will be discussion more about trends down Group I and down Group VII in the upcoming lesson. Here’s a video on the displacement reaction of Group VII elements: