Friday, November 27, 2009

collecting gases / igcse /gcse chemistry notes

We can collect gases in
4 ways :
1- Downwards into a testube or a gas jar , this is used for gases which denser than air .
2- Upwards into a testube are a gas jar , this used to collect gases which less dense than air and are soluble in water .
3- Over water , - to collect gases which are less dense than air and are insoluble in water- or to collect gases which are having the same dense like air and are insoluble in water .
4- In a gas syringe , a gas syringe is used to collect the gas and to measure the volume of the gas collected .

2- Normal test – pure water boils at 100 degrees Celsius

34 comments:

雙魚 said...

Circumstances are the rulers of the weak, instrument of the wise..........................

瑪丹娜 said...

想像是什麼並不重要,想像能做什麼才重要..................................................

小文 said...

狗健康
寵物床

文輝 said...

堅持是為著某種目的或目標,而持續不斷朝向既定方向努力的一種意念。 ..................................................

上宜俊宇芳心 said...

Wise men learn by other mens mistakes; fools by their own.......................................................

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雅茹WillyA_Mellinger0724 said...

噴泉的高度,不會超過它的源頭。一個人的事業也是如此,它的成就絕不會超過自己的信念。 ....................................................

李0825juanherzberg said...

恨一個人,比原諒一個人,更傷力氣。 ..................................................

韋于倫成 said...

take care yourself!! ^^ ........................................

韋于倫成 said...

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俊達 said...

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紫倫妍勳 said...

真正的朋友不會把友誼掛在嘴巴上 ............................................................

羅文浩 said...

向著星球長驅直進的人,反比踟躕在峽路上的人,更容易達到目的。............................................................

暴枝盈 said...

Better say nothing than nothing to the purpose...................................................

慧君 said...

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江婷 said...

在莫非定律中有項笨蛋定律:「一個組織中的笨蛋,恆大於等於三分之二。」......................................................................

陳延doraramirezDGD尹 said...

人有兩眼一舌,是為了觀察倍於說話的緣故。............................................................

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奕廷 said...

單純喜歡你的部落格 留個言跟您問聲好~~............................................................

王伯亞王伯亞 said...

唯有學習不已的老師,才能認真的教,唯有燃燒自己,才能點亮他人的燈............................................................

江淑如 said...

It is never too late to learn. ............................................................

明儒 said...

幸福沒有鑰匙,只有梯子。.................................................................

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謝俊柯凡豐德 said...

所有的資產,在不被諒解時,都成了負債.................................................................

吳家達張怡萱張怡萱 said...

Judge not of men and things at first sight................................................

文吳云 said...

當我微笑時,世界和我一起微笑;當我快樂時,世界和我一起活躍。..................................................

少明秋菁 said...

人生中最好的禮物就是屬於自己的一部份..................................................

凱許倫 said...

Make yourself necessary to someone..................................................................

偉曹琬 said...

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雯陳俊 said...

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彬彬哲宇 said...

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建枫 said...

好的blog需要我們一起努力!

chemistry notes / igcse-gcse- Olevel

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