O-Level Singapore/O-Level Chemistry Tuition/Chemistry Tutor
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1. Kinetic Particle Theory
2. Measurement and Experimental Techniques
3. Purification and Separation
4. Elements, Compounds and Mixtures
5. Atomic Strucuture
6. Ionic Bonding
7. Colvant and Metallic Bonding
8. Writing Equations
Balancing Chemical Equations
9. The Mole
10. Chemical Calculation
11. Acids and bases
12. Salts
13. Oxidation and Reductions
14. Metals
15. Electrolysis
16. The Periodic Tables
17. Energy Changes
18. Speed of Reactions
19. Ammonia
20. The Atomsphere and Enviroment
21. Introduction to Organic Chemsitry
22. Alkanes
23. Alkenes
24. Alcohols and carboxylic Acids
25. Macromolecules
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Chemistry O- level Tuition/Chemistry Tuition
Chapter 1 – Kinetic Particle Theory
1. Explain why a solid have a fixed shape and volume using kinetic particle theory.
The particles of a solid are held together by very strong forces of attraction. They cannot move freely, and have only enough kinetic energy to vibrate and rotate about their fixed position.
2. Explain why a liquid does not have a fixed shape using kinetic particle theory.
The particles of a liquid are held together by weaker forces of attraction as compare with solid. They are arranged in a disorderly manner and can move freely by sliding over one another. Thus liquild does not have a fixed shape and take the shape of the container.
3. Explain why during the melting process, the temperature of the substance does not rise even though heating continue.
The temperature remains constant because all the heat energy taken in by the particles is used to overcome the forces of attraction holding the particles. A mixture of solid and liquid phases exist here.