Congratulation to my students who sat for the Kuiz Kimia Kebangsaan 2009. All of you have done your best.
Especially to Nuramirah Syahirah Rizalman and Pg Iqhwan Ashraf Pg Mohd Kamil who achieved the highest score in this quiz.
Congrats!
Wednesday, November 18, 2009
Antibiotics
The value of hardwork and logical thinking should not be underestimated. But pure luck also plays a role in most real scientific breakthroughs.
The supreme example of luck in all scientific hystory occurred in the late summer of 1928 when the Scottish bacteriologist Alexander Fleming went on vacation, leaving in his lab a culture plate recently inoculated with the bacterium Staphylococcus aureus.
While Fleming was away, an extraordinary chain of events occured.. First , a 9 day cold spell lowered the lab temperature to a point where the Staphylococcus on the plate could not grow. During this time, spores from a colony of the mold Penicillium notatum being grown on the floor below wafted up into Fleming's lab and landed in the culture plate.
The temperature then rose, and both Staphylococcus and Penicillium began to grow.
On returning from vacation, Fleming discarded the plate into a tray of antiseptic.
Evidently though the plate did not sink deeply enough into the antiseptic, because when Fleming happened to glance at it a few days later, what he saw changed the course of human history :
He noticed that the growing Penicillium mold appeared to dissolve the colonies of staphylococci .
Fleming realized that the Penicillium mold must producing a chemical that killed the Staphylococcus bacteria, and he spent several years trying to isolate the substance .
Finally in 1939, the Australian pathologist Howard Florey and the German refugee Ernst Chain managed to isolate the active substance , called penicillin.
By 1943, penicillin was being produced on a large scale for military use, and by 1944 it was being used on civilians. Fleming, Florey and Chain shared the 1945 Nobel Prize in medicine.
The supreme example of luck in all scientific hystory occurred in the late summer of 1928 when the Scottish bacteriologist Alexander Fleming went on vacation, leaving in his lab a culture plate recently inoculated with the bacterium Staphylococcus aureus.
While Fleming was away, an extraordinary chain of events occured.. First , a 9 day cold spell lowered the lab temperature to a point where the Staphylococcus on the plate could not grow. During this time, spores from a colony of the mold Penicillium notatum being grown on the floor below wafted up into Fleming's lab and landed in the culture plate.
The temperature then rose, and both Staphylococcus and Penicillium began to grow.
On returning from vacation, Fleming discarded the plate into a tray of antiseptic.
Evidently though the plate did not sink deeply enough into the antiseptic, because when Fleming happened to glance at it a few days later, what he saw changed the course of human history :
He noticed that the growing Penicillium mold appeared to dissolve the colonies of staphylococci .
Fleming realized that the Penicillium mold must producing a chemical that killed the Staphylococcus bacteria, and he spent several years trying to isolate the substance .
Finally in 1939, the Australian pathologist Howard Florey and the German refugee Ernst Chain managed to isolate the active substance , called penicillin.
By 1943, penicillin was being produced on a large scale for military use, and by 1944 it was being used on civilians. Fleming, Florey and Chain shared the 1945 Nobel Prize in medicine.
Wednesday, September 23, 2009
ITS A BOY !
And his name is Muhammad Khalid...
My baby was born on the 5th september, that is 15 Ramadhan 1430 Hijrah.
I delivered him in Likas Hospital and guess what ? I met my ex 5 Makmur student, Dr Alvin Oliver Paulus, having on call at that time.
Hopefully Sabah College can produce more doctors in the future...
I also want to wish Selamat Hari Raya Aidilfitri to all my muslim students.
Thank you Hairil for your emails. I will reply them soon.
My baby was born on the 5th september, that is 15 Ramadhan 1430 Hijrah.
I delivered him in Likas Hospital and guess what ? I met my ex 5 Makmur student, Dr Alvin Oliver Paulus, having on call at that time.
Hopefully Sabah College can produce more doctors in the future...
I also want to wish Selamat Hari Raya Aidilfitri to all my muslim students.
Thank you Hairil for your emails. I will reply them soon.
Friday, August 21, 2009
CHEMISTRY MODULES
Finally i managed to download the modules for all of you to study and try at home. Today is my last day in school before i go for my maternity leave.
ALL THE BEST TO ALL OF YOU guys !
Your trial SPM chemistry paper will start on the 3rd and 4th of September.
Do not hesitate to contact me through my email....I will try to answer all your questions about our chemistry topics .
But you can always refer to teacher Pang or teacher Sia ( substitute teacher) when I'm not around.
Study smart, take care of your health, and for those who already paid me for the chemistry reference book, the books will be ready after the school holiday.
Download this REDOX reaction module.
Selamat menjalankan ibadah puasa ......
See you soon on this coming November...
ALL THE BEST TO ALL OF YOU guys !
Your trial SPM chemistry paper will start on the 3rd and 4th of September.
Do not hesitate to contact me through my email....I will try to answer all your questions about our chemistry topics .
But you can always refer to teacher Pang or teacher Sia ( substitute teacher) when I'm not around.
Study smart, take care of your health, and for those who already paid me for the chemistry reference book, the books will be ready after the school holiday.
Download this REDOX reaction module.
Selamat menjalankan ibadah puasa ......
See you soon on this coming November...
MANUFACTURED SUBSTANCES IN INDUSTRIES
The questions about Contact process has already came out on last year 2008 chemistry paper 2.
So please download this module
So please download this module
Thermochemistry
To all my form five science students,
Today is the last day before your school holiday and the fasting month...
Please download my latest module
Today is the last day before your school holiday and the fasting month...
Please download my latest module
Friday, June 19, 2009
Scientist of the week
Michael Faraday(1791-1867)
The laws of electrolysis were discovered by Michael Faraday, perhaps the most talented experimental scientist in the nineteenth century.
Faraday developed the laws of electrolysis between 1831 and 1834. In mid-December of 1833, he began a quantitative study of the electrolysis of several metal cations, including tin(II), lead(II) and zinc(II) ions. Despite taking a whole day off for Christmas, he managed to complete these experiments, write up the results of three years work, and get his paper published in the Philosophic Transactions of the Royal Society on January 9, 1834. In this paper, Faraday introduced the basic vocabulary of electrochemistry, using for the first time the terms "anode", "cathode", "ion", "electrolyte", and " electrolysis".
To Michael Faraday, science was an obsession; one of his biographers described him as a "work maniac". An observer said of him,
...if he had to cross the laboratory for anything, he did not walk, he ran; the quickness of his perception was equalled by the calm rapidity of his movements.
The laws of electrolysis were discovered by Michael Faraday, perhaps the most talented experimental scientist in the nineteenth century.
Faraday developed the laws of electrolysis between 1831 and 1834. In mid-December of 1833, he began a quantitative study of the electrolysis of several metal cations, including tin(II), lead(II) and zinc(II) ions. Despite taking a whole day off for Christmas, he managed to complete these experiments, write up the results of three years work, and get his paper published in the Philosophic Transactions of the Royal Society on January 9, 1834. In this paper, Faraday introduced the basic vocabulary of electrochemistry, using for the first time the terms "anode", "cathode", "ion", "electrolyte", and " electrolysis".
To Michael Faraday, science was an obsession; one of his biographers described him as a "work maniac". An observer said of him,
...if he had to cross the laboratory for anything, he did not walk, he ran; the quickness of his perception was equalled by the calm rapidity of his movements.
Sunday, May 31, 2009
A message to all Form Five Science students of Maktab Sabah
Some of you are worried about me going for my maternity leave this coming September.
No need to worry.
We have plenty of time to finish another three chapters in the Form Five chemistry syllabus.
That is why I want all of you to start preparing folios for the last chapter, Chemicals For Consumers after the mid term school holidays.
This chapter is important for SPM examination. Last year it came out as an essay question in Paper 2 SPM 2008.
About the three chemistry modules that I gave you, make sure you finish them all during this holiday and remember, there are more of my modules coming up!
No need to worry.
We have plenty of time to finish another three chapters in the Form Five chemistry syllabus.
That is why I want all of you to start preparing folios for the last chapter, Chemicals For Consumers after the mid term school holidays.
This chapter is important for SPM examination. Last year it came out as an essay question in Paper 2 SPM 2008.
About the three chemistry modules that I gave you, make sure you finish them all during this holiday and remember, there are more of my modules coming up!
Saturday, May 30, 2009
Scientist of the week
John Dalton(1766-1844)
Remember John Dalton with his atomic theory?
Those who are form four students will definitely remember him for his theory in the atomic structure.
Dalton was a quiet, unassuming man. When presented to King William IV of England, he refused to wear the colourful court robes because of his religion. His friends persuaded him to wear the scarlet robes of Oxford University, from which he had a doctor's degree.
But Dalton was color-blind, so he saw himself clothed in gray.
Dalton made contributions to biology, physics and chemistry. In Manchester, England, he did research and spent 20 hours a week lecturing in maths and the physical sciences.
Dalton never married. He said, " My head is too full of triangles, chemical properties, and electrical experiments to think much of marriage."
Friday, May 29, 2009
Why do we study chemistry?
Most of my students would say,
"Why do we have to study chemistry?"
Well, if you're planning to have a carrier in medicine or pharmacy, you will want to become familiar with the properties of aqueous solutions which include blood and & other body fluids.
So, chemistry is actually contributes to other disciplines.
But beyond career preparation, an objective of this course is simply... to make you a better informed citizen...
"Why do we have to study chemistry?"
Well, if you're planning to have a carrier in medicine or pharmacy, you will want to become familiar with the properties of aqueous solutions which include blood and & other body fluids.
So, chemistry is actually contributes to other disciplines.
But beyond career preparation, an objective of this course is simply... to make you a better informed citizen...
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