# [S3] Lesson 25 : Pressure Part 3 + Maths MYE Revision Set A + Redox Part 1 Updates/Debrief

[S3 Physics PMCians]

What we did in 2 hours (PMC LIVE):

On the 18th, 20th and 21st June, the S3PH has come together to cover the following during our weekly zoom lessons:

1) Pressure L3 (Application on the Hydraulic System) + Mind Map recalls on all the other systems (Manometer and Barometer)

2) Test B (Guided Thinking to recap on the approach to solve pressure questions)

Always remember:

1) P(A) = P(B) [for the three different system learnt, namely: Manometer, Barometer and Hydraulic Press]

2) To determine the pressure exerted at a particular point, we always see what is ABOVE the point that exerts the pressure downwards onto that point

3) To convert cmHg or mmHg to Pa: Use the Formula, P = ht (in m) x density of fluid (mercury) x g (10 N/kg on earth)

We will start our Thermal Physics journey with the Kinetic Model of Matter.

Special Mention:

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

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 (PMC LIVE):

This week, we recapped the chapters we did in Semester 1. We have seen some standard question types and the tricky ones.

To sum up, we covered these chapters

• Logarithm functions
• Exponential functions
• Non-linear simultaneous equations
• Application of Surds
• Polynomials

Please try the booklets as homework before referring to the solutions:

• MYE, Indices & Surds

Special Mention:

Quadratic Function Test: Highest Score 15/15

Congratulations to the 2 students who scored full marks!

Ethan Ngui         (Nan Chiau High School)

Kaitlyn Lim         (Raffles Girls’ School)

Please continue to revise the chapters in Book 1 and Book 2. We will do another set of revision paper in the next lesson.

Your friendly PMC S3 Math tutors

[S3 Chemistry PMCians]

What we did in 2 hours (PMC LIVE):

We have kick started our learning on redox by building a strong foundation in calculating oxidation states and learning about definitions of oxidation and reduction. Recall: determining redox by oxidation state is the universal method that works for all equations, a method we insist here at PMC as compared to schools.

You are now able to complete the Take Home Package of Redox to Page 5. Do take some time to recap what was covered in the previous lesson to build on your understanding this weekend!

Special Mention:

Having learnt oxidation and reduction, we will start our exploration of what it means by oxidising and reducing agents and how to accurately identify them in a chemical reaction.

Here’s a video of potassium manganate, an oxidising agent, and its reaction with Fe(II) containing solution:

Stay healthy, stay safe, see you this weekend!

Regards,

Mr Jacob

Home-Based-Learning (HBL)

1) PMC Lecture webcast (www.pmcdigital.sg)