00:02
Hi there.
00:03
We have some statements here about the atom and the subatomic particles, and we need to determine if each one is true or false.
00:13
If it ends up being false, we need to correct it.
00:17
So starting with letter a.
00:19
The proton is a negatively charged particle.
00:22
Well, as written, that is false, because a proton is positively charged.
00:43
Okay, let's look at letter b.
00:47
Letter b says the neutron, is 2 ,000 times as heavy as a proton.
00:53
That is also false.
00:54
Neutrons and protons have about the same mass, but they are both about 2 ,000 times more massive or heavier than an electron.
01:05
So we could fix this by saying the neutron.
01:14
We could say is the same as a proton, or we could say is 2 ,000 times as heavy as an electron.
01:34
All right, let's look at letter c.
01:36
We're due for a true statement here.
01:38
We haven't had one yet.
01:39
C says the atomic mass unit is based on a carbon atom with six protons and six neutrons...