"检测"、"测试"、"测验"、"检验"，这几个词语的意思很相似。请老师们给我解释一下它们的区别，以及如何去用这些词语。

谢谢！

Splint burning bright on oxygen:
http://www.youtube.com/watch?v=6HdT3oBy6Lg

Burning carbon monoxide:
http://www.youtube.com/watch?v=5bPN26Zt08s

Burning hydrogen:
http://www.youtube.com/watch?v=f2tRQz7kz_Q&NR=1

Limewater CO2 test:
http://www.youtube.com/watch?v=21aBA0jUJXU

测试： 用于机械、仪器和电器等
我们测试一下网站的新功能吧。
Wǒmen cèshì yīxià wǎngzhàn de xīn gōngnéng ba.

测验： 多用于指小考试。
“测试”和“测验” 用作考试时相同。
明天我有一个测试/测验。
Míngtiān wǒ yǒu yīge cèshì/cèyàn.

检测 ：检查和测试  
这些机器每年都要检测一次。
Zhèxiē jīqì měinián dōuyào jiǎncè yīcì.

检验：检查和验证
检验一下，这个是不是氧气。
Jiǎnyàn yīxià, zhège shìbushì yǎngqì.

"Cooking meth" means making Methamphetamine.

Of course it's ok for me but ask someone from the US instead.

Now I can officially mark this lesson off as "worked through" :)

谢谢您的快速回复。

Francois Grignard, Louis Pasteur, Linus Pauling, Madam Curie, Piere Curie, Irving Langmuir, Avagadro, Arrhenius, Lavoisier, Alfred Nobel, Daniel Rutheford, Johannes Van der Walls, Robert Woodward, Joseph Priestly and Xiaoliang Sunney Xi, who is Chinese, and teaches at Harvard today.

I have a graduate degree in Chemistry, but even I find introductory level chemistry rather boring. It does get more exciting if you stick with it, really it does. :-) There were always many Chinese students in the chemistry department. Men and women both.