00:01
Okay, so we have to figure out which substances contain both ionic and covalent bonds.
00:06
So let's start out with nh4 -o -h, ammonium hydroxide.
00:11
That comes from the ammonium ion and the hydroxide ion put together.
00:18
Now, the ammonium ion is nh4 with a plus and oh -minus, which means it has an extra electron.
00:41
So you can see there are covalent bonds in the nh4 and in the oh.
00:47
However, each also has a charge.
00:50
So this one has both covalent and ionic substances within its structure.
00:57
Now, if we were to look at cacl2, this one is completely ionic.
01:05
And so c .l has a charge of minus one as an ion, and c.
01:12
A has a charge of plus two as an ion.
01:16
You can see that i'm not drawing any covalent bonds here.
01:20
This one's only ionic...