# [J2] Term 2 Week 5 (20-26 Apr) Updates/ Debrief

[J2 Physics PMCians] Get Stricken by the Photoelectric Effect!!

What we did in 2 hours:

We embarked on the new field of Quantum Physics, by looking at one of the key experiments that moved Physics from Classical Mechanics to the modern Quantum Physics – the Photoelectric experiment.

Did you know that the photoelectric effect is the foundation of one of our renewable sources of energy? If you guessed Solar Power, you’re right!! When light of sufficiently high frequency hits the solar cell, current is created!

What you take home:

1) Quantum Physics Test C – Chat Challenge (solutions)

https://tinyurl.com/y86384t6

2) Quantum Physics Test D – Breakout Room Challenge (solutions)

https://tinyurl.com/ydglehno

Special Mention:

For our next lesson, we will explore if the energy of electrons in orbit around the nucleus is also quantised. Please make sure you watch the Webcast Lecture entitled Quantum Physics Part 2 : Line Spectra  before our upcoming tutorials.

Till then, have a blessed week!! 🙂

[J2 Maths PMCians]

What we did in 2 hours:

Webcast:

We finish Binomial Distributions with some heavier examples, and introduce ourselves to Normal Distributions

LIVE:

We tried a variety of Binomial Distribution questions, practising skills from basic level – conditions, RV / distribution / probability statements, GC techniques, to more advanced skillsets – conditional probability, show-type questions, etc.

*For Sat 4:30pm students, the lesson materials have been uploaded into Lesson 16 Tutorial folder.

What you take home:

In this current learning format, your materials will be uploaded to your folders at pmc.sg/lecture , so do check regularly.

Special Mention:

Our LIVE challenge this week is more on Binomial Distribution, with some very basic practice on Normal Distribution.

See You (online) and Stay Healthy!

[J2 Chemistry PMCians]

What we did in 2 hours:

[Bishan] We have completed looking at the reactions of Organic Nitrogen Compounds, specifically looking at the amine, amide and phenylamine functional groups. We went on to determine the main criteria affecting basicity of organic compounds.

[Paya Lebar/Beauty World] We continued to explore pH calculations involving weak reagents, salt hydrolysis and buffer solutions. We also explored qualitatively the chemistry behind hydrolysis of salts and buffer solutions.

What you take home:

The solutions to selected structured questions and everything you need to know series are found here:

Organic Nitrogen Compounds:

https://tinyurl.com/qk2h7nv

Acid Base Equilibrium:

https://tinyurl.com/yx6sognc

Special Mention:

[Bishan] We will complete Organic Nitrogen Compounds by looking at the chemistry behind amino acids & proteins.

[Paya Lebar/Beauty World] Let us apply the pH calculations into titration curves!

Stay safe & strong!

Mr Leong

Home-Based Learning (HBL)

1) One Weekly PMC Lecture Webcast (www.pmc.sg/lecture)

2) One Weekly PMC LIVE Tutorial (www.pmc.sg/live)