I'm marking paper 3 of my students now.  So far, students seems not to have much problems in this paper. Average of 5C students score ...

I have seen one group of students did a research to preapre soap by using used cooking oil few years back. The ideas popped in these groups ...

Fertilisers are chemicals widely used to increase the yield of fruit or plant. Ammonium fertilisers are inorganic ferlilizer, mainly consist...

I found students quite confused over these basic concepts, even though I have shown them computer simulation, diagrams, etc. Ionic Compoun...

I have finished marking paper 2 of my students. Overall I noticed students had some misconceptions in certain topics like ionic compound vs...

This holiday assignment focuses on two main topics in Chapter 9, Manufacture Substance in Industry: Sulphuric Acid and Ammonia . These tw...

Ammonium fertiliser is a type of salt. It can be prepared through a reaction of ammonium hydroxide solution and acid.   ammonium hydroxide...

Paper 1 Paper 2 Paper 3 Answer Scheme You are welcomed to post comments here about any problems in this set of question papers.. ...

Paper 1, 2, 3 and the answer scheme. Click here to open the pdf file. For the things we have to learn before we can do them, we learn by d...

Paper 1 Paper 2 Paper 3 Answer Scheme

Six die of ammonia poisoning at Tanjung Karang, Selangor. Shared via AddThis

Lightweight Reinforced Concrete( LRC ) is actually one type of composite materials. It is a mixture of polystyrene and concrete. As it is ...

Yesterday when I entered my chemistry class, I challenged my students to electroplate their key chains/coins with copper before leaving chem...

Types of battery available: dry cell alkaline cell mercury cell(e.g. battery in watch, calculator) lead acid accumulator(e.g. car battery) n...