00:03
So this question is asking us to identify the properties of some of the subatomic particles that we see.
00:10
And so i'm going to start off with drawing an atom here.
00:15
I'm going to start by drawing the nucleus.
00:17
And in the nucleus, we have our protons.
00:20
I'm just going to do four protons.
00:22
And we have our electrons.
00:24
Or two, we're neutrons here.
00:26
So protons and neutrons here.
00:29
And then our electrons, we're going to have outside.
00:35
In the cloud, in the electron shells, which you'll learn about later.
00:41
But as we look at this and again, let's go ahead and color code these.
00:45
So we've got our neutrons in blue and our protons in green.
00:52
The charge for each of these, so the proton has a charge of plus one, and the electron has a charge of minus one.
01:01
And the neutron is neutral, as you might expect from the, name.
01:08
But you'll notice that for our protons and our electrons, we have the same number of them, right? we've got four plus ones.
01:13
We've got four minus ones so that the entire atom is electrically neutral.
01:17
If we look at the size, we can clearly see that the electron is the small one...