Best Physics | Chemistry Super Value For Money Tuition Classes

The Physics and Chemistry classes in Victoria Tutorial Centre have been anchored by Mr Sim Kok Heng since 1999, one year after we set up the centre. We are extremely fortunate that we still have Mr Sim to teach in the centre till today. We have set up the classes with only one goal in mind, and that is, to improve the students’ grades in their own school.  Mr Sim developed his own method and strategy for teaching the subjects based on his experience both as university student and a teacher for more than 20 years. His outstanding achievement as a tutor and record still stands today, one in two students in his class achieved an “A” for Physics and Chemistry since day one. Both subjects are taught separately.

His qualifications

Mr Sim graduated from the National University of Singapore with a honours degree in Science. He then enrolled in the National Institute of Education and subsequently joined teaching full time. He was with the Ministry of Education Singapore (MOE) and taught at Victoria School as a Physics teacher for 8 years. He then continued to teach in various Secondary schools till today. He has taught students from different parts of Singapore and students with different academic abilities. In the Victoria Tutorial Centre, Mr Sim has tutored more than 5000 students over the last 17 years in the subjects. He is one of the rare individual who is able to master both Physics and Chemistry at O-levels.

His Physics and Chemistry lessons

So how does he conduct those outstanding lessons to improve the students’ results? During the lessons,whether it is Pure Physics or Pure Chemistry Mr Sim revises the topics and make it easier for the students to absorb and internalise the information quickly.  His teaching strategy also involve helping students find a quick and effective approach to solving Physics and Chemistry questions.

Most students who attend Mr Sim’s tuition have problems coping and understanding the topics in Physics and Chemistry. That’s the reason why they spend money to attend extra tuition at our centre. And students these days are very busy at school and time is really a precious commodity. We want to make sure that we make use of this tuition time effectively. Mr Sim helped them save time by providing clear and quick understanding of the subject. He also designed his own physics and chemistry questions that will test the understanding of the students.  We find that students under the guidance of a good tutor like Mr Sim have more confidence in the subjects and they learn many times faster in their own school. Mr Sim ensures every minute spent in his class is not wasted and actually saves the students’ time and effort.

Every lesson conducted by Mr Sim is a fresh lesson. He assumes you have not been taught the topics in school. He will teach and explain the Physics (or Chemistry) concepts and give many examples to further illustrate the concepts. Once you understood the concepts, he will then go on and help you apply those concepts with problem solving. Whether is it Physics or Chemistry, understanding the concepts first is fundamental. But grasping the concepts without knowing its applications is useless. Mr Sim will help the students apply the concepts into all the different questions on the the topics. His own set of uniquely crafted questions comes from years of experience of teaching Physics and Chemistry. When he helps the students digest those concepts and problem solving, the learning process is accelerated and the students feel more confident that they have absorbed fully everything that is required of the subjects.

Over the years, we have many students telling us that their teachers in school are not up to standard, they cannot understand their lectures and their teachers’ notes are not as good as Mr Sim’s. We cannot speculate on the reasons why the school teachers cannot deliver as well. But one thing we are certain, despite teaching the same subjects for the last 17 years in the Victoria Tutorial Centre, Mr Sim still prepares every of his lesson every day. He will read through his own notes plus the notes he gives to his students. Every sentence that he makes in class has been rehearsed for the last 17 years. That is real precision teaching. If he finds that certain illustration is not well understood by the students, he will revised it immediately and he makes sure the concept will sink in faster with the students in future. The questions he design for the students homework are also of master quality. They are as refined as the wine from Bordeaux. Each question is carefully crafted to ensure the students learn and understand the related topic fully.  You can take a look at some of the sample notes he created for his tuition classes.

The Physics topics covered for the year:

These are the topics we would be teaching for the year.

For Secondary 3  2017 (Secondary 4  2018) (Spa replaced by a Practical Test Paper)

S/N Topic
1 Units and Measurements
2 Reflection of light
3 Refraction of light
4 Lenses
5 Electromagnetic spectrum
6 Kinetics
7 Dynamics
8 Turning effect of force (Moment)
9 Scalars and Vectors
10 Pressure
11 Work, Energy and Power
12 Simple kinetic theory of matter
13 Temperature
14 Transfer of thermal energy :  Specific heat capacity and Heat capacity
15 Transfer of thermal energy :  Specific latent heat and Latent heat
16 Transfer of thermal energy :  Conduction, Convection and Radiation
17 General wave properties
18 Sound
19 Static electricity
20 Current electricity (I)   :  Current, Potential difference (Voltage), Resistance
21 Current electricity (II)  :  E.m.f. , Ohm’s law, Resistance, V/I characteristics
22 Current electricity (III) :  Series and parallel circuits, Potential divider
23 Current electricity (IV) :  Practical electricity
24 Magnetism
25 Magnetic effect of current
26 Motor effect of current
27 D.C. motor
28 Electromagnetic induction (I)   :  Faraday’s law and Lenz’s law
29 Electromagnetic induction (II)  :  A.C. generator
30 Electromagnetic induction (III) :  Transformer
31 Uses of cathode-ray oscilloscope (CRO)
32 Action and use of circuit components

 

The Chemistry topics covered for the year:

These are the topics we would be teaching for the year.

For Secondary 3  2017 (Secondary 4  2018) (Spa replaced by a Practical Test Paper)

S/N Topic
1 The particulate nature of matter
2 Atomic structure
3 The Periodic Table – General trends
4 The Periodic Table – Noble gases
5 Types of bonding – Ionic, Covalent and Metallic
6 Formulae and Names of compounds
7 Writing and balancing equations
8 Writing and balancing ionic equations
9 Bonding, structure and the physical properties of matter
10 Experimental techniques
11 Acids, bases and salts
12 Redox reactions
13 Mole concept and stoichiometric calculations
14 Solutions – Concentration, pH and VA calculations
15 The Periodic Table – Trends in Group I
16 The Periodic Table – Trends in Group VII
17 The Periodic Table – Transition elements
18 Qualitative Analysis – Tests for cations, anions and gases
19 Metals and the Reactivity Series
20 Nitrogen and Ammonia
21 Air and Pollution
22 Electricity and Chemistry (Electrolysis)
23 Extraction and uses of metals
24 Energy changes
25 Speed of reaction
26 Organic Chemistry − Introduction
27 Organic Chemistry – Alkanes
28 Organic Chemistry – Alkenes
29 Organic Chemistry – Alcohols
30 Organic Chemistry – Carboxylic acids
31 Organic Chemistry – Synthetic polymers

 

Some sample Physics and Chemistry notes you can download:

Acid bases and Salt notes

Air Oxygen and Oxides Notes

Physics notes -Dynamics

Physics Exercise – Dynamics

His fees

Mr Sim comes from a very humble background. He knows what it is like to grow up with very little resources in the family. But he also know the importance of education in Singapore and why students need to do well for their O-levels exams. That is the reason why his fees hardly changed since 1999. For the last 17 years, there are only two revisions in the fees for the his Physics or Chemistry tuition. We sincerely believe his tuition classes are the best value for money in Singapore.

What his Physics students say

I was at the centre for two years since Secondary 3. I was failing my Physics tests for the first semester. Then a friend recommended me to Victoria Tutorial Centre and I signed up after hearing great reviews of the tutors. I was then introduced to Mr Sim Kok Heng classes, and he has given me the best tuition ever. He is a very patient tutor and is always ready to answer all our queries. His teaching materials and notes are amazing. He can explain concepts in a way that all the students can understand easily. From the way he conducts his lesson, you know he has prepared his lecture thoroughly. There is a seamless flow in his lessons. Every bit of it is connected and related to the chapters.

Part of his preparation for his physics lesson is to anticipate the questions students might have. This tutor spends time looking through his notes before every lesson! This is the type of commitment and experience that a well trained and seasoned tutor has accumulated over the years. Mr Sim ensures that every possible question that every student has is answered. I used to be ‘blur’ after every physics lesson in school, and my teacher could not clarify and provide clear explanations during the lesson. But after attending Mr Sim’s class, I gain more interest and confidence in Physics. I started practicing solving Physics questions more on my own. I eventually got an “A” for my O-level Physics exams. I am thankful for all the help Mr Sim had given me and all the staff at Victoria Tutorial Centre. Just enrol now, do what Mr Sim tells you to do and work hard!

– Ang Xin Rui   

Mr Sim Kok Heng has made Physics so easy and interesting for me that I never thought that I could do well eventually. Most students including myself lose interest in the subject fast when it becomes too complex and difficult to understand. Mr Sim’s tuition class is a little different from my school because he teaches us his special examination techniques to help us score well during exams. The Physics tuition class at the Victoria Tutorial Centre has helped me grasp concepts better and to make me more confident in the subject. He motivates the students very well and is the reason for my improvement in the subject. He made me feel smarter and more steady in the subject. Mr Sim reads the examiners report annually to find out what are the common mistakes students make and always highlight them to make sure we do not make the same mistakes during our exams. He teachers us how to answer questions and gives us tips and strategies to impress the Cambridge examiners . Mr Sim will give you all the knowledge and skills you need to tackle the Physics exams and everything you need to score an A for your Physics or Chemistry exams. So do not hesitate to recommend your friends to Mr Sim at the Victoria Tutorial Centre. Sign up now!

– Debra Ang

What his Chemistry students say

My subject combination has left me no choice but to do Pure Chemistry for my O-levels. I do not have an interest in Chemistry and so was not doing well for most of the class tests. Then my mother’s friend recommended I take tuition classes at the Victoria Tutorial Centre and I signed up for Mr Sim Kok Heng Chemistry lessons. From the first lesson, Mr Sim was very encouraging and tried his best at motivating the weaker students like me. His lesson were very engaging and has helped me to develop confidence in the subject. He revised the basics and fundamentals with me and shared his exam answering techniques. With his easy to understand notes, the tuition helped me to do my school Chemistry homework with ease every time. I used to procrastinate with my homework because I could not answer any Chemistry questions at all. Mr Sim’s lessons have given me the skills and knowledge to analyze questions better and to solve questions more accurately. His Chemistry tuition also has ample practice questions to test my knowledge base and to check what I have learnt. I learnt that Mr Sim will revised his worksheets to perfection every term! Most school teachers would use the same worksheets year after year to save them time and effort. I would recommend all my friends and relatives to join the Chemistry class at the Victoria Tutorial Centre as it is really the best tuition center in the East side of Singapore. I find the fees are incredibly low for the high standards the tutor and the centre has. It is the most value for money tuition in Singapore. Go sign up now!

– Tan Jia Hui

The Chemistry tuition classes at the Victoria Tutorial Centre definitely made a big difference in my O-level results. My tutor Mr Sim is very meticulous and in his work. You should see his Chemistry notes. You can tell he puts in his heart and soul for his Chemistry notes. All the illustrations are drawn personally and even the margins have exact dimension for all his worksheets. I have friends who even offered to buy his notes. And even other home tutors wants to use his Chemistry and Physics notes for their own students, can you believe that? During his tuition class, he would constantly expose us to all the different kinds of questions with different level of difficulty. He believes that if you have all the questions covered for every topic, what else can they ask that you won’t know? Usually after every lesson, I will have a head start the next week in school. When I have a head start, it means that I am hearing the concepts and explanations of the Chemistry topic for the second time. What it does is that the knowledge is absorbed much more quickly and I will be smiling while my classmates will be frowning. I eventually got an A for Chemistry O level exams. All thanks to Mr Sim and everyone at Victoria Tutorial Centre. He is the best Physics tutor I know. I highly recommend all parents to sign up their children for the Chemistry and Physics tuition at the Victoria Tutorial Centre!

– Andrew Chan

Physics and Chemistry tuition

Another sample of Mr Sim’s Chemistry worksheet:

Redox Reactions               

Introduction

  • Chemical changes can be classified into various types.  For examples,
Type of chemical change Example
Neutralisation acid   +   base      salt   +   water

HCl(aq)   +   NaOH(aq)      NaCl(aq)   +   H2O(l)

Thermal decomposition

● The breaking down of a

   substance into simpler

   substances by heat.

CaCO3(s)      CaO(s)   +   CO2(g)
Precipitation

● The formation of an insoluble

   solid product, called a

   precipitate, usually from  

   aqueous solutions.

CuSO4(aq) + 2NaOH(aq) Cu(OH)2(s) + Na2SO4(aq)
Redox You will learn about this type of chemical change in this topic.

Oxidation state  (also known as oxidation number)

  • A simple ion, for examples H+ and O2−, carries a real charge because it has an unequal

number of protons and electrons.

  • An atom in a covalent substance may be assigned a formal or imaginary charge because

some elements attract electrons more strongly than others.

  • Definition of oxidation state (or oxidation number)

Oxidation state is the real or imaginary charge on a particle.

  • Rules for assigning oxidation states
Rule 1 Oxidation state of an atom alone or combined with its own kind is zero, 0.
Rule 2 Oxidation state of a simple ion is the charge on the ion.
Rule 3 Oxidation state of hydrogen combined with a metal is −1.

Oxidation state of hydrogen combined with a non-metal is +1.

Rule 4 Oxidation state of oxygen in its compounds is usually −2.
Rule 5 Oxidation state of group I element in its compounds is +1.
Rule 6 Oxidation state of group II element in its compounds is +2.
Rule 7 Oxidation state of group VII element in its compounds is usually −1.
Rule 8 Sum of oxidation states of all particles in a compound is zero, 0.
Rule 9 Sum of oxidation states of all particles in a polyatomic ion is

the charge on the ion.

Oxidation and Reduction

Oxidation is Reduction is
(a)  gain of oxygen. (a)  loss of oxygen.
(b)  loss of hydrogen. (b)  gain of hydrogen.
(c)  loss of electrons. (c)  gain of electrons.
(d)  increase in oxidation state. (d)  decrease in oxidation state.
  • Definitions of

oxidation and reduction.

  • Oxidation and reduction always occur together.
  • A redox reaction is one that involves both reduction and oxidation.

Exercise

  1. Explain why each of the following chemical changes is a redox reaction.

(a) C   +   CuO      CO   +   Cu

(b) H2S   +   Cl2      2HCl   +   S

(c) Mg   +   Cu2+      Mg2+   +   Cu

(d) MnO2   +   4HCl      MnCl2   +   2H2O   +   Cl2

  1. Explain why the following chemical change is not a redox reaction.

CaO   +   2HCl      CaCl2   +   H2O  

Oxidising agent and Reducing agent

Oxidising agent Reducing agent
either

adds oxygen,

removes hydrogen,

removes electrons

or

increases oxidation state.

either

removes oxygen,

adds hydrogen,

adds electrons

or

decreases oxidation state.

An oxidising agent is itself reduced. A reducing agent is itself oxidised.

Exercise

For each of the following redox reactions,

(a) name the oxidising agent;

(b) name the reducing agent.  

Explain your answers.

(i) 3CuO   +   2NH3     3Cu   +   N2   +   3H2O

(ii) Cu   +   2Ag+      Cu2+   +   2Ag

(iii) S   +   3F2      SF6       

  • Examples of oxidising agents and reducing agents.
Oxidising agents Reducing agents
Potassium manganate(VII) , KMnO4 Potassium iodide , KI
Iron(III) sulfate , Fe2(SO4)3 Iron(II) sulfate , FeSO4
Hydrogen peroxide , H2O2 Hydrogen peroxide , H2O2
Nitric acid , HNO3 Carbon (e.g. coke)
Concentrated sulfuric acid , H2SO4 Carbon monoxide , CO
Oxygen Hydrogen
Group VII elements (Halogens) Metals (e.g., Group I Alkali metals)
Potassium dichromate(VI) , K2Cr2O7 Sulfur dioxide , SO2

Acidified potassium manganate(VII)

  • Acidified potassium manganate(VII), KMnO4 , is a strong oxidising agent.
  • To determine whether an unknown substance is a reducing agent (that is, has reducing

property), add a strong oxidising agent to it.

Test Acidify a portion of aqueous potassium manganate(VII) with

dilute sulfuric acid.

Add the resulting solution dropwise to a portion of the aqueous unknown.

Observation Purple solution of acidified potassium manganate(VII) turns colourless.

MnO4(aq)      Mn2+(aq)

                purple                    colourless  

Conclusion Since purple aqueous manganate(VII) is reduced to colourless aqueous

manganese(II) ions, the unknown has reducing property.

Acidified potassium iodide

  • Acidified potassium iodide, KI , is a strong reducing agent.
  • To determine whether an unknown substance is a oxidising agent (that is, has oxidising

property), add a strong reducing agent to it.

Test Acidify a portion of aqueous potassium iodide with dilute sulfuric acid.

Add the resulting solution to a portion of the aqueous unknown.

Observation Colourless solution of acidified potassium iodide turns brown.

I(aq)      I2(aq)   

        colourless             brown

Conclusion Since colourless aqueous iodide is oxidised to brown aqueous iodine,

the unknown has oxidising property.

Note : (1) When a few drops of starch solution is added to the brown

solution of iodine, a blue-black colouration is formed.

I2(aq)   +   starch solution      blue-black colouration

brown

(2) Some black solids may be precipitated together with the

formation of the brown solution.  These black solids are

undissolved iodine.

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Physics and Chemistry tuition classes Singapore

A sample of his Chemistry practice questions worksheet:

Redox Reactions :    Exercise 1               

        [ 22 marks ]

_____________________________________________________________________________

  1. What is meant by oxidation state (also called oxidation number)?

………………………………………………………………………………………………..         [1]

  1. Write down the oxidation state of the named element in each substance.

(a) hydrogen in H …………. (g) sodium in NaCl ………….

(b) hydrogen in H2 …………. (h) magnesium in MgO ………….

(c) sodium in Na+ …………. (i) chlorine in NaCl ………….

(d) hydrogen in MgH2 …………. (j) carbon in CO2 ………….

(e) hydrogen in H2O …………. (k) sulfur in SO42− ………….

(f) oxygen in H2O ………….       [5.5]

  1. Write down the oxidation state of the named element in each substance.

(a) nitrogen in N …………. (g) potassium in KNO3 ………….

(b) nitrogenn in N2 …………. (h) calcium in CaCl2 ………….

(c) oxygen in O2− …………. (i) chlorine in HCl ………….

(d) hydrogen in NaH …………. (j) nitrogen in NH3 ………….

(e) hydrogen in NH3 …………. (k) manganese in MnO4 ………….

(f) oxygen in CuO ………….       [5.5]

  1. Define oxidation and reduction.
Oxidation is Reduction is
(1)
(2)
(3)
(4)

         [4]

  1. Explain, in terms of oxygen gain/loss, why the chemical change is a redox reaction.

C   +   CuO      CO   +   Cu

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         [1]

  1. Explain, in terms of hydrogen gain/loss, why the chemical change is a redox reaction.

H2S   +   Cl2      2HCl   +   S

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         [1]

  1. Explain, in terms of electron transfer, why the chemical change is a redox reaction.

Mg   +   Cu2+      Mg2+   +   Cu

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         [1]

  1. Explain, in terms of oxidation number changes, why the chemical change is a redox

reaction.    MnO2   +   4HCl      MnCl2   +   2H2O   +   Cl2

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         [1]

  1. Explain why the following chemical change is not a redox reaction.   

CaO   +   2HCl      CaCl2   +   H2O  

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         [1]

  1. Is the chemical change  Cu  +  4HNO3  →  Cu(NO3)2  +  2NO2  +  2H2O  redox?  

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         

………………………………………………………………………………………………..         [1]

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Physics Chemistry Tuition Victoria Tutorial Centre