評(píng)論
打印
Homogeneous mixtures, on the other hand, well, no amount of magnification could reveal a detectable boundary between the components.
但是同質(zhì)混合物，即使放大到再大也揭示不了這些成分之間可檢測(cè)的界限。
Their mixing extends all the way to the fundamental particle level.
它們的混合一直延展到了最根本的顆粒層面。
And we use the term “solution” to refer to the single phase, homogeneous mixtures.
我們用“溶解”這個(gè)術(shù)語(yǔ)指代這種單一的狀態(tài)，這種同質(zhì)混合物。
When salt dissolves in water, no amount of magnification is going to show you separate pieces of salt.
當(dāng)鹽溶在水中時(shí)，放大再多倍也看不到單獨(dú)的鹽粒。
There are no detectable boundaries between salt and water. So it’s a solution.
鹽和水之間沒(méi)有可檢測(cè)到的界限。所以它“溶解”了。
Even so, what you can do with solutions is separate the parts by a process called distillation.
即便如此，你對(duì)溶解物能做的就是通過(guò)一個(gè)叫做蒸餾的過(guò)程把各部分分離。
If you distill salt water, water gets boiled away from the solution and only the salt remains behind.
如果你蒸餾鹽水，水分會(huì)從溶解物中汽化，只有鹽分留了下來(lái)。
And in your next lab actually, we’ll be using these processes, distillation and filtration, to show how we can separate the different parts of some mixtures.
實(shí)際上，你們下次做實(shí)驗(yàn)的時(shí)候，我們會(huì)使用這些處理方法，蒸餾和過(guò)濾，來(lái)給你們展示我們能分離一些混合物的不同部分。
