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@ 41011 Saved by the Gong Chemistry
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A 大家看，這4瓶氣體是氫氣、氧氣、一氧化碳和二氧化碳，可是沒有標籤，我們該怎麼鑑別？
dàjiā kàn, zhè sì píng qìtǐ shì qīngqì, yǎngqì, yīyǎnghuàtàn hé èryǎnghuàtàn, kěshì méiyǒu biāoqiān, wǒmen gāi zěnme jiànbié?
Look, everyone. These four vials of gas hold hydrogen, oxygen, carbon monoxide, and carbon dioxide. But they aren't labeled, so how do we distinguish them?
B 老師老師，氧氣可以用帶火星的木條檢驗。
lǎoshī lǎoshī, yǎngqì kěyǐ yòng dài huǒxīng de mùtiáo jiǎnyàn.
Teacher, teacher! Oxygen can be tested with a glowing splint.
C 也能用燃著的木條，氧氣可以使木條越燒越旺。
yě néngyòng ránzháo de mùtiáo, yǎngqì kěyǐ shǐ mùtiáo yuè shāo yuè wàng.
You can also use a burning splint. The oxygen will make the splint burn brighter and brighter.
B 二氧化碳能使澄清的石灰水變渾濁。
èryǎnghuàtàn néng shǐ chéngqīng de shíhuīshuǐ biàn húnzhuó.
Carbon dioxide makes clear limewater turn murky.
D 一氧化碳和氫氣能被點燃。
yīyǎnghuàtàn hé qīngqì néng bèi diǎnrán.
Carbon monoxide and hydrogen are combustible.
A 大家說得都很好，那我們來制定一個實驗步驟。
dàjiā shuō de dōu hěn hǎo, nà wǒmen lái zhìdìng yī ge shíyàn bùzhòu.
You all answered very well. Now let's plan out the steps of the experiment.
B 先檢驗氧氣！
xiān jiǎnyàn yǎngqì!
Test for oxygen first!
C 先檢驗二氧化碳！
xiān jiǎnyàn èryǎnghuàtàn!
Test first for carbon dioxide!
A 好了，別爭了，大家分組做吧。
hǎo le, bié zhēng le, dàjiā fēnzǔ zuò ba.
OK, don't argue. Everyone, break into groups.
B 陳磊，你說先檢驗什麼？
Chén lěi, nǐshuō xiān jiǎnyàn shénme?
Chen Lei, what will you test for first?
D 先檢驗二氧化碳吧！快拿4根試管出來，倒入澄清的石灰水。
xiān jiǎnyàn èryǎnghuàtàn ba! kuài ná sì gēn shìguǎn chūlai, dàorù chéngqīng de shíhuīshuǐ.
Let's first test for carbon dioxide! Quick, get out four test tubes, and pour in the settled limewater.
B 這瓶是二氧化碳！
zhè píng shì èryǎnghuàtàn!
This bottle has carbon dioxide!
C 陳磊，給你，燃著的木條！
Chén Lěi, gěi nǐ, ránzháo de mùtiáo!
Chen Lei, here you go, a glowing splint!
B 咦，這兩瓶都點燃了。那我們怎麼知道哪瓶是氫氣哪瓶是一氧化碳啊？
yí, zhè liǎng píng dōu diǎnrán le . nà wǒmen zěnme zhīdào nǎ píng shì qīngqì nǎ píng shì yīyǎnghuàtàn a?
Oh, both of these bottles ignited. So, how will we know which one is hydrogen and which is carbon monoxide?
D 別急，看我的！好了！這個是一氧化碳！
bié jí, kànwǒde! hǎo le! zhè ge shì yīyǎnghuàtàn!
Don't rush, look at mine! OK, this one is carbon monoxide!
B 老師，我們鑑別出來了！
lǎoshī, wǒmen jiànbié chūlái le!
Teacher, we've figured out which is which!
A 好，那我們請陳磊同學說說他們的實驗步驟。
hǎo, nà wǒmen qǐng Chén Lěi tóngxué shuō shuo tāmen de shíyàn bùzhòu.
Good. So let's ask Chen Lei to say a bit about the steps of his experiment.
D 先用澄清的石灰水檢驗出二氧化碳，然後用燃著的木條，然後，嗯…...
xiān yòng chéngqīng de shíhuīshuǐ jiǎnyàn chū èryǎnghuàtàn, ránhòu yòng ránzháo de mùtiáo, ránhòu, ng4......
First, use the settled limewater to test for carbon dioxide, then use the burning splint, then...ah...
B 讓徐曉婷說吧，陳磊嘴笨，會做不會說。
ràng Xú Xiǎotíng shuō ba, Chén Lěi zuǐ bèn, huì zuò bùhuì shuō.
Let's have Xu Xiaoting speak. Chen Lei is not very articulate, he can do it but can't talk about it.
C 能使燃著的木條越燒越旺的是氧氣，被點燃的是氫氣和一氧化碳。然後再用澄清的石灰水檢驗燃燒生成的氣體。因為一氧化碳燃燒會生成二氧化碳。
néng shǐ ránzháo de mùtiáo yuè shāo yuè wàng de shì yǎngqì, bèi diǎnrán de shì qīngqì hé yīyǎnghuàtàn. ránhòu zài yòng chéngqīng de shíhuīshuǐ jiǎnyàn ránshāo shēngchéng de qìtǐ. yīnwèi yīyǎnghuàtàn ránshāo huì shēngchéng èryǎnghuàtàn .
The one that can make the wooden splint burn brighter and brighter is oxygen. The ones that ignited were hydrogen and carbon monoxide. Afterward, use the settled limewater again to test the gas produced by the burning. Because carbon monoxide produces carbon dioxide when burned.
A 很好，今天的實驗很成功，下課以後，請大家認真填寫實驗報告。
hěnhǎo, jīntiān de shíyàn hěn chénggōng, xiàkè yǐhòu, qǐng dàjiā rènzhēn tiánxiě shíyàn bàogào.
Very good. Today's experiment was a big success. After class, please carefully fill in your experiment reports.
Key Vocabulary
氣體 qìtǐ
氫氣 qīngqì
氧氣 yǎngqì
一氧化碳 yīyǎnghuàtàn
二氧化碳 èryǎnghuàtàn
標籤 biāoqiān
鑑別 jiànbié
火星 huǒxīng
木條 mùtiáo
檢驗 jiǎnyàn
燃著 ránzháo
旺 wàng
澄清 chéngqīng
石灰水 shíhuīshuǐ
渾濁 húnzhuó
點燃 diǎnrán
制定 zhìdìng
實驗 shíyàn
步驟 bùzhòu
試管 shìguǎn
倒入 dàorù
燃燒 ránshāo
生成 shēngchéng
填寫 tiánxiě
報告 bàogào
Supplementary Vocabulary
液體 yètǐ
固體 gùtǐ
化學 huàxué
儀器 yíqì
實驗室 shíyànshì
反應 fǎnyìng
原子 yuánzǐ
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