Soap is made from a chemical reaction called saponification.

VOA: special.2011.03.09

I can take an insulated box, and I can have a chemical reaction in that insulated box.

里面进行着化学反应,比如说把一个药店。

麻省理工公开课 - 热力学与动力学课程节选

To ask questions like how much heat is released in a chemical reaction that takes place at constant temperature.

当我们想要知道,当一个化学反应在恒定的温度下发生时,会放出多少热量时。

麻省理工公开课 - 热力学与动力学课程节选

Hess' Law states that for any chemical reaction, the energy change is path independent.

盖斯定律表明，对于任意化学反应，能量变化并非是路径依赖的。

麻省理工公开课 - 固态化学导论课程节选

So, then we go to thermodynamics and chemical equilibrium, and this is really about chemical reactions -- weather a reaction will go, will it be spontaneous, if there an equilibrium, what direction will the reaction be shifted in.

然后我们要讲到热力学和化学平衡,这都和化学反应有关，一个反应是否能发生,是不是能自发反应，如果存在化学平衡，它会朝什么方向移动。

麻省理工公开课 - 化学原理课程节选

Generally, there are a couple of elements that one might set down as in a Petri dish, and wait to see if some chemical reaction might take place, but not at all sure of what it might be.

一般来说，都有几个元素,作者会把它们像放入培养基中一样培养,等待某种化学反应的产生，但对可能的结果却一无所知。

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So, a protein that has tyrosine and it has tyrosine in a position such that it's on the outside of the protein and accessible to chemical reaction can be phosphorylated.

所以,一种蛋白质中含有酪氨酸,并且该酪氨酸位于,像蛋白质的外侧这样的位置,这样才能够发生磷酸化反应

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What is it when you run a chemical reaction under ordinary circumstances, what's constant?

如果你在通常的环境下进行化学实验,那么这些条件是什么？什么保持常数？

麻省理工公开课 - 热力学与动力学课程节选

So, how would we describe a chemical reaction?

我们如何描述一个化学反应？

麻省理工公开课 - 固态化学导论课程节选

Some proteins can be switched from an 'off' position where they don't do anything to an 'on' position where they now do something by only a chemical reaction like this where a phosphorous is added.

一些蛋白质可以从关闭状态的,无所作为,到成为开启状态后,执行某种功能,中间只发生了一个引入磷酸基的化学反应

耶鲁公开课 - 生物医学工程探索课程节选

It performs a chemical reaction on the protein, taking a phosphorous from ATP and moving that phosphorous onto the protein.

它能够催化蛋白参与如下反应,即将ATP上的一个磷酸基团,转移到蛋白质上

耶鲁公开课 - 生物医学工程探索课程节选

It's not a chemical reaction.

它不是化学反应。

麻省理工公开课 - 热力学与动力学课程节选

Restriction enzymes are just a kind of enzyme, enzymes are protein molecules that make a chemical reaction go faster, and the chemical reaction that restriction enzymes do is cutting DNA.

限制性内切酶是一种酶,而酶是加速化学反应的蛋白质分子,限制性内切酶加速的化学反应,是切割DNA

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