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A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tut

Good effort for those students completed 2007 A Level papers

Please complete 2008 A level Papers by this week.

Contact me if you have any questions

From A Level Maths Tutor

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A-Level Physics Tuition Singapore/H2 Physics Tuition/JC Physics Tutor

Hi All A-Level/JC/H2/H1 Physics Students

Good effort for those students completed 2007 and 2008 A Level papers

Please complete 2009 A level Paper 1 to 3 by this week.

Contact me if you have any questions

Cheers! A level Physics Tutor
Mr Ong

[admin]

O-Level Additional Mathematics Tuition Singapore

Increasing and Decreasing Functions

1. When dy/dx > 0 the function is increasing.

2. When dy/dx < o the function is decreasing.

3. When dy/dx = o , there is a turning point or point of inflexion

4. Second derivative maximum point

5. Second derivative > 0 => minimum point

6. Second derivative = 0 we cannot conclude that it is a point of inflexion. We need to use the first derivative test to determine the nature.

O-Level Additional Mathenatics Tutor

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O Level E Maths Tuition Singapore/Tuition O Level E Maths/Tutor

Investigative Problems

1+2+3+4+5………….+n = (1/2)(n)(n+1)

General Term = first term + (n-1)common different

Trianglular numbers
1, 3, 6, 10,………
1, 1+2, 1+2+3, 1+2+3+4,……….

From O-Level Elementary Mathematics Singapore Tutor

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A-Level Tuition Singapore/GP Tuition/General Paper Tutor

Planning Essays

1) Identify the Question-type
2) Brainstorm
3) Select
4) Categorise

A-level GP/General Paper Tuition Singapore – Admin

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O Level Chemistry Tuition Singapore/Chemistry O Level Tuition/Tutor

Chapter 5 – Atomic Structure

1) Atoms are made up of protons, neutrons and electrons.
2) Proton number or atomic number is the number of protons in an atom.
3) Nucleon number is the number of protons and neutrons in an atom.
4) Isotopes are atoms of the same element with the same number of protons but different number of neutrons.

From : O Level Chemistry Tutor

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O-Level Singapore/O-Level/Physics and Chemistry Tuition/Physics Tutor

Mass, Weight and Density – Key Concepts

1. Mass is a measure of the amount of substances in an object
2. Inertia is tendency of any object to resist change in its state of rest
3. Gravitational field is a region in which a mass experiences the gravitational force of attraction.
4. Weight of the object will change as the gravitational field strength varies in different planets.
5. W = mg
6. Density = Mass/Volume

O-level Physics Tutor

[admin]

O-Level Singapore/O-Level/Pure Physics Tuition/Physics Tutor

Mass, Weight and Density – Key Concepts

1. Mass is a measure of the amount of substances in an object
2. Inertia is tendency of any object to resist change in its state of rest
3. Gravitational field is a region in which a mass experiences the gravitational force of attraction.
4. Weight of the object will change as the gravitational field strength varies in different planets.
5. W = mg
6. Density = Mass/Volume

o-level Physics Tutor

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A-Level Physics Tuition Singapore/H2 Physics Tuition/JC Physics Tutor

Hi Si Hui

Will give you a copy today

Cheers! Mr Ong

[admin]

A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tut

Hi Si Hui

Solutions sent, will help along to shape the grahs

Cheers!

[admin]

A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

Hi Si Hui

Solutions sent

Cheers!
Mr Ong

[admin]

A-Level Chemistry Tuition Singapore/H2 Chemistry Tuition/JC Chemistry Tutor

Hi Chu Wen

2HI ——-> H2 + I2
<——
Initial – 0.5 0.5
Change 2x -2x -2x
Eqm 2x 0.5-2x 0.5-2x

Kp = (PH2 * PI2)/PHI^2 = ( 0.5 – x)^2/2x = 4.44
solving x = 0.096
PH2 = 0.5 – 0.096 = 0.404 atm

Cheers! From A-Level Chemistry Tutor

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A-Level Chemistry Tuition Singapore/H2 Chemistry Tuition/JC Chemistry Tutor

Hi Shu Yuan

Noted

Cheers! From A-Level Chemistry Tutor

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A-Level Chemistry Tuition Singapore/H2 Chemistry Tuition/JC Chemistry Tutor

Hi All A-Level/JC/H2/H1 Chemistry Students

Catalyst

A catalyst is a substance that increases the rate of a chemical reaction without itself being chemically changed at the end of the reaction

Characteristics of the catalyst:
1. Required in small amounts
2. Do not affect the enthalpy change of the reaction
4. Increase the rate constant of the reaction.
5. Accelerates the reaction, rather than initiate it.

An autocatalyst is a product of a chemical reaction which is capable of acting as a catalyst for the reaction.

A homogeneous catalyst exists in the same phase as the reactants

A heterogeneous catalyst exists in a different phase from the reactants.

Cheers! From A-Level Chemistry Tutor

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Hi Gloria

Solutions posted, will help you next lesson to unlock the last part

Cheers!
Mr Ong

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