00:01
In question 75, several illustrations are provided, and you are given five questions to answer.
00:10
Let's recreate the illustrations that we have.
00:15
Well, the single illustration we have.
00:17
It asks, is this sample homogeneous or heterogeneous? that's difficult to tell.
00:25
We've only got a total of six particles, and yeah, we've got them kind of clustered on this side of one type, clustered on this side.
00:33
So there might be differences in properties, but we're really not going to be able to tell unless we were to expand this picture and see whether or not there's a whole large region of these blue molecules versus the red molecules.
00:49
So i would say there's just not enough information for us to make a call on whether it's homogeneous or heterogeneous at this very limited particulate level.
01:00
B asks, is the sample a pure substance or a mixture? well, it obviously contains two different types of compounds, which would define it as a mixture.
01:11
Part c then asks are the particles elements or compounds, and because we see different atoms that are chemically bonded to each other, both of these particles are compounds...