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，亮氨酸全都极性的，这如何征服考试的秘诀啦！

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

但水不溶解离、极性物质。

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

所以甲因此变得极性。

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

所以这个极性的，当然，这个极性的。

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.

因此，这些简单的碳氢化合物极性的，它们的电均匀布在上，这油和水不混合的原因。

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极性的还极性的，以及如何将极性应用于我们所谓的间作用力。