Exothermic and Endothermic Reaction

Here are some usefull video about this topic. Hope you like it.

Exothermic and Endothermic Reaction-Animation
Diferrentiate Exothermic and Endothemic Reaction
Heat of Displacement-Calculation
Find Temperature for Heat of Displacement-Calculation

Rubber

This is a video on how latex is process to become rubber. The process is call Coagulation Process of Latex.

From Latex to Rubber

Here are some examples of rubber based product.

Ball Making Process
Tires Making Process
Airless Tires

Enjoy viewing!

Saponification : Soap In The Making

Soap is very important in our life to wash dirty clothes and cleaning oily dirts. Here are some video on how does soap works and Saponification Process.

How Does Soap Works?
Saponification

Hope you enjoy the video.

Oxidation and Reduction Reaction

Here is animation and explaination to show Redox Reaction.

Enjoy watching!

Definition of Oxidation and Reduction Reaction.
What is Redox Reaction? An explaination...
Redox Reaction
How to Calculate Oxidation Number?
How to Determine It Is Redox Reaction or Not?

Electrochemistry

Danielle Cell is one of the example for the use Electrochemistry that you learn in Form 4. I set up here the animation video of Danielle Cell.

Enjoy Watching!

Electrolysis : Danielle Cell
Voltaic Cell

Rusting and Corrosion : How It Occurs?

Here is a video showing how rusting and corrosion occurs in our daily life.

Rusting and Corrosion : How it Occurs?

Enjoy viewing!

Group Assignment 1

Attention to Group Leaders of 5 Hibiscus, these are the question i mention about in your Chemistry Class. Please do this Exercise together with your group members. Submit your answers on Friday, 27/08/12 during Chemistry Class.

 

Section B

 

1 a) i ) What is meant by melting point and freezing point of substances? ( 2 marks)
     
        ii) Suggest a method which can be used to determine the melting point of substance K.(Melting   point of substance K=120 degee Celcius) (6 marks)

 b) Melting point of naphthalene can be determined in a laboratory experiment by using water bath. Design an experiment to determine the melting point of naphthalene. (12 marks)

Section C

1. a) What is matter? (2 marks)
   
b) State three physical states of matter. Compare the physical states in terms of arrangements of particles, forces of attraction between the particles and freedom of movements. (12 marks)

c) What is isotopes? Give two examples of isotopes and their uses in our daily life. (6 marks)

Thank you for your cooperation.