O-Level Pure Chemistry Final Revision: Score 100% Chemistry MCQ Workshop (9th Year!)

  1. Do you lack the motivation to continue with thorough preparation for your Pure Chemistry MCQ paper when you just study for Chemistry structured paper 15 days ago?
  2. Are you uncertain of how to prepare effectively for your MCQ?
  3. Are you simply going to flip through your notes and textbook on the eve of your MCQ paper and thinking that it is sufficient for you to continue in the paper?
  4. Are you overly confident of your ability that you do a slipshod revision instead of paying to details, recapping essential concepts?

For the 9th consecutive year, Score 100% O-Level Pure Chemistry MCQ Workshop has helped hundreds and hundreds of students from more than 170 schools to prepare Chemistry MCQ with

  • the right mindset (regardless of how you think you have fared for Paper 2)
  • tested and proven strategies to score confidently in MCQ within 60 minutes
  • highlighting of the common mistakes
  • the strategies to complete the MCQ paper fast and accurate even with time for checking (This is the secret why students can score 100% for Chemistry MCQ, you have time to check our answers while your friends struggle to complete the questions!)

Many people know me as the Master Trainer for Chemistry in Winners Education as well as Ten Year Series book author. 

Over the last 18 years, I have coached thousands and thousands of students from over 170+ schools to achieve the marks they truly deserve. I have also rekindled their interest in Chemistry so much so that many of them are furthering their study in chemistry-related courses and in fact, a handful of them will be joining the booming chemical industry.

Join me and a group of committed students on 11 November 2017 (Sat) for Score 100% Pure Chemistry MCQ Workshop by clicking on the button below! 

“This programme tells me the topics that I am weak in and it emphasises the importance of getting full marks for Chemistry MCQ. I have learnt to manage my time wisely, which is crucial in doing Paper 1 as I usually could not finish the paper. I learnt more about the strategies of doing MCQ and revise on key concepts. I hope I am able to get full marks and I will recommend this to anyone taking O-Levels.”  Cher Yi Jia, Nan Hua High

“It has benefitted me by giving me the chance to practise. It has also helped me to revise and remind me what I have forgotten.”  Ryan Lee, Chung Cheng High School (Main)

“It is good that Sean has organized this workshop to focus on the MCQ of Chemistry paper as it is often a paper that teachers and students alike will neglect. Through the workshop, he covers tricky and common MCQ questions, which is very helpful. His cheerful and lively teaching approach learns to keep everyone awake and in focus. Thanks Sean for everything! Definitely recommended to other students in future.”  Edna Chan Zhi Yin, Hougang Sec School



Master O-Level Organic Chemistry in 2 Days!

I am Sean Chua, Master Trainer for Chemistry in Winners Education. Many students and parents also know me as the Ten Years Series author for O-Level & A-Level Chemistry.

Do you know there are less than 3 months to the O-Level Pure Chemistry Paper 2?

What this means is ‘Are you ready in your basic Chemistry concepts and application skills to score confidently in this year O-Level Chemistry examinations?’

I have been conducting the Organic Chemistry Topical Workshop since 2008 to help struggling students to

  • Summarize large junk of information into digestible bits
  • Understand this major topic clearly
  • Solve data-based application questions, guaranteed to be tested in examinations
  • Reduce memory work to a minimum
  • Score as high as possible in this heavy weighting topic!

Some of you might wonder about the effectiveness of this workshop since it is so near to O-Levels!

This is precisely the reason why I am still conducting this workshop during this period as most schools teach Organic Chemistry as the last topic in a rush rush manner and most students are unable to understand, find it confusing.

Are you one of them?

Since Organic Chemistry consists of many small subsections, many students are overwhelmed with the huge amount of content and thus lose confidence in their Chemistry.

“She can understand your lesson very well and for the first time, she says she likes Chemistry. Thank you for rekindling her interest in Chemistry. She has also expressed her interest in the weekly class.” 
Mr Cher, Father of Cher Yi Jia, Nan Hua High School, D7 to A2 in 4 months! 

I will be covering 100% of O-Level Organic Chemistry. It includes the following:

  1. Fuels & Crude Oils
  2. Homologous Series & Functional Groups
  3. Naming of Organic Compounds
  4. Isomerism
  5. Alkanes
  6. Alkenes
  7. Alcohols
  8. Carboxylic Acids
  9. Esters
  10. Macromolecules
  11. Application Questions

Organic Chemistry Workshop

Date & Time: 9 & 10 August 2017, 9am to 1pm

Bonus Booster Session

Date & Time: 31 August 2017, 10am to 1pm

Venue: 261, Waterloo Centre, #03-21, Singapore 180261

Chemistry Phenomenon: Nitrogen Dioxide as an Air Pollutant

Being a Chemistry Trainer and also a fellow cyclists (yes guys, i love to cycle), i read this local Straits Times Newspaper article with interest.

Seems like our Nitrogen Dioxide, NO2(g) level within the lower atmosphere level is quite high in Singapore.

NO2(g) is considered a major air pollutant which has the following harmful effects:

1) eye and lungs irritation and causes breathing difficulties

At high levels, it may even lead to inflammation of the lungs i.e. bronchitis

2) acid rain consisting of Nitric Acid HNO3 that is highly corrosive

In the presence of oxygen in the air, nitrogen dioxide is converted to nitric acid via the following chemical equation:

4NO2(g) + 2H2O(l) + O2(g)  4HNO3(aq)

Nitric acid corrodes buildings and harms aquatic life and plants.

Do you know that due to acid rain, the Statue of Liberty in the United States of America had been badly corroded. In the year of 1983, the US Government launched a campaign to restore this historical figure of US? Chemistry in action indeed!

NO2(g) is formed due to 2 main sources:

1) Lightning activities (which we have no control over since it is a natural source and it is NOT a daily source)

2) Vehicle exhaust fumes where high temperature around vehicles engine (which is a man-made source) causes 21% O2(g) and 78% N2(g) in the air to react to form oxides of nitrogen, NOx(g) which is mainly nitrogen monoxide, NO(g) and nitrogen dioxide, NO2(g).

Nitrogen reacts with oxygen at high temperature to form nitrogen monoxide or nitric oxide, NO(g).

N2(g) + O2(g)  2NO(g)

Nitrogen monoxide reacts with oxygen to form a brown colour gas called nitrogen dioxide, NO2(g).

2NO(g) + O2(g)  2NO2(g)

From the article, it shows that as concentration of air particulates (unburnt hydrocarbons) increases due to incomplete combustion of fossil fuels in vehicle exhaust fumes, there is also an increase in the concentration of nitrogen dioxide, NO2(g).

Since the satellites images have shown that the recent haze in Singapore is not from Indonesian fires (slash and burn method), it should be from the amounts of vehicle exhaust fumes produced locally on a daily basis.

  • More vehicles running on the roads
  • More incomplete combustion of fossil fuels
  • More unburnt hydrocarbons being produced
  • More nitrogen dioxide is also being produced
  • As such, the amount of unburnt hydrocarbons and the amount of nitrogen dioxides are highly correlated in a city which has a large number of vehicles running on the ground.

Time to ponder about if Singapore should encourage less driving….for our health and environment.

This is a good case study for GCE O-Level Pure Chemistry and Combine Science Chemistry students in Singapore to put their concepts learned in school into actual practice and application.

Same applies to Chemistry students worldwide doing other syllabus. This can be particularly severe in large cities, where traffic is heavy.

I hope you find the content easy for your understanding and if you have any questions, leave me a comment below.

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