Glycine, alanine, valine, leucine are all nonpolar assets and this is how you drop them in an exam.

甘氨酸，丙氨酸，缬氨酸，亮氨酸全都是，这就是你如何征服考试秘诀啦！

But water does not dissolve non-ionic, nonpolar substances.

但水不溶解离子、物质。

So the methane molecule becomes nonpolar as a result of that.

所以甲烷分子因。

So this one's nonpolar, and, of course, this one's nonpolar.

所以这个是，当然，这个是。

Therefore, these simple hydrocarbons are pretty nonpolar and their electrons are distributed evenly over the molecule, which is why, you know, oil and water don't mix.

因，这些简单碳氢化合物是，它们电子均匀分布在分子上，这就是油和水不混合原因。

In this video, we're going to see how we figure out whether molecules are polar or nonpolar and also how to apply that polarity to what we call intermolecular forces.

在本视频中，我们将了解如何确定分子是还是，以及如何将应用于我们所谓分子间作用力。