[DSE CHEM] How to memorise the inter-conversion between different organic compounds?

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Posted by Mr. Ricky Tsui | Posted in Biology, Chemistry | Posted on 12/08/2015

Hope this will help you abit!

[F1 IS] Steam engine + generator + light bulb

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Posted by Mr. Ricky Tsui | Posted in Integrated science | Posted on 11/06/2015

Slow motion:

 

Parts that you may be interested in:     (Source: Howstuffworks)

Keyword(s): burn, energy, energy change, energy convertor, fuel, light bulb, motor, steam engine, generator

[F3 IS/ DSE Chem] Compare the reactions of Ca and Mg

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Posted by Mr. Ricky Tsui | Posted in Chemistry, Integrated science | Posted on 08/05/2015

Reaction with cold water

Reaction with air (burning)

Keyword(s): air, calcium, calcium hydroxide, calcium oxide,cold water, hydrogen gas, magnesium,magnesium hydroxide, magnesium oxide,metal, metal hydroxide, metal reactivity series,oxide, oxygen, reaction of metal

[F1 IS / DSE CHEM] Water treatment plant – Filtration

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Posted by Mr. Ricky Tsui | Posted in Chemistry, Integrated science | Posted on 20/04/2015

Filtration is commonly used to remove insoluble impurities from a mixture.

Question:

In filter column, we often put small and fine substance on TOP (e.g. sand, activated carbon powder) and put large substances at BOTTOM (e.g. rocks, stones), WHY?:)

Let’s see:

DEMONSTRATION

 

REAL

Keyword(s): filter column, filtration, particle size, water purification

Distillation of Coke

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Posted by Mr. Ricky Tsui | Posted in Chemistry, Integrated science | Posted on 26/03/2015

Keyword(s): boiling, condenser, distillate, distillation, residue, simple distillation, solute, solution, solvent

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