After A Long Break
Thursday, January 11, 2007
The school holidays are over and school have started. it's time we resume our work on the blog.
The quiz has been unpopular n we have decided to take it off.
--M@rIe Go rOuNd--
5:08 AM
Winner Of The Quiz
Saturday, October 28, 2006
I think we have a winner and it's science ***...
Thank You for your participation..
Next Quiz will start sooner...
--M@rIe Go rOuNd--
1:38 AM
Start Of New Quiz... ... ...
Thursday, October 26, 2006
The first quiz has ended and I really hope the 2nd quiz would have more response... Hope my wish would come true.. haha.. Just joking..
Question 2:
Why does the Polonium become hot??
Please post your answer at the white tagboard.. Thanks.. And 1 last thing: Please put your name when tagging..
--M@rIe Go rOuNd--
7:31 AM
3nd Of The First Quiz.....
Oh.. The respond to the first quiz is not very good as only 1 person tried to answer.. Thank You..
**Please put your name when you post the answers to the quiz..**
The answer to the quiz is:
The element, radium, naturally gives off radioactivity as the atoms split apart.
--M@rIe Go rOuNd--
7:19 AM
+he St@rt Of The Quiz
Wednesday, October 11, 2006
Now that the Examination are over, we should start our weekly quiz. Lets start with a simple 1.
Question 1:
How does Radium produces radioactivities?
Please post your answer on the white tagboard below the original 1..The first person to answer the question and tag the answer on the second tagboard, the name of the person will be placed on the Hall Of Fame above the tagboard.
--M@rIe Go rOuNd--
9:16 PM
--ResT~
Thursday, September 28, 2006
Now is exam period,so we will have to stop posing for this short period of time.
sory for the inconvenience caused(:
--M@rIe Go rOuNd--
11:26 PM
@nswer To Mr Khoo
Friday, September 22, 2006
i would like to thank Mr Khoo for his QuestionThose who has question can email to suning_candy@hotmail.com (group leader)Ans: Marie Curie discovered the element radium,which naturally gives off radioactivity as its atoms split apart. Marie curie carried out her research at a time when radioactivity was not understood at all. Polonium was the first highly radioactive element to be isolated in pure form.It gave off so much radiation ,that it made the surrounding air glow,and the polonium itself became hot.But Marie'swork had shown that polonium,though powerful,was not responsible for the rest of pitchplende's radioactivity.She continued her work and partly purified a substance that she thought contained another new element.This,she named it radium,after the latin word radius,meaning "ray".However,there was so little of it in the pitchblende that huge amounts of ore would be needed to prerare a tiny sample of radium.In 1899,Marie began the immense taskof obtaining radium in pure form,in order to prove its existence .After 3 years of hard work,Marie finally made a pure form of radium.There was only 0.1 gram-a small speck.Yet it was enough radium to use in defining some of its physical and chemical properties.She even found its melting point, 700 degree celcius.MArue's discovery ,radium,is rarely used today,even in scientific research.However,herwork on its purification,and on the nature of the atom.
--M@rIe Go rOuNd--
2:00 AM
AnsWeR tO PrOF BoO
Thursday, September 21, 2006
kaes,dont really know who you are,but nvr mind...
Ans:Marie curie changed our attitude and thinking towards radium,which gives off lots of radioactivity.
There are several demonstrations of the nature of science within Curie’s discovery of Radium. The concept that scientific theory changes as new evidence is found is one that is primary to the nature of science.
With the discovery of radium many scientific theories were changed, however, the most significant might be that atoms were unbreakable bits of matter.
Scientists were forced to abandon their assumptions about how the universe worked. Following this change in perspective scientists began studying how atoms could generate energy spontaneously, and asking what happened to the atoms after they gave off their rays.
Another significant demonstration of the nature of science within Curie’s work was how scientists work as citizens of the community.
Curie even dedicated much of her time to using radium and radiation as treatments for serious illnesses like Cancer.
Ultimately , it is also important to consider where other scientists took their discovery of radium, which as history proves led to everything from machines to help the sick to weapons of mass destruction.
--M@rIe Go rOuNd--
5:22 AM
