00:01
In this video, we want to talk about the name factor label method or approach, which is an alternative name for dimensional analysis.
00:14
So when you're solving problems to convert units in chemistry and other sciences, we want to know what's the best answer for why it's called a factor label approach.
00:23
So let's consider like a basic example just to have it in our mind.
00:26
If we want to, if we have like, i don't know, 10 centimeters, and we want to know how many meters is it, we would say start with what you're given and then set up a conversion factor where you put centimeters on the bottom, meters on the top, and you know that one meter is 100 centimeters, then you can multiply across and cross out the units.
00:46
So that's our factor label approach.
00:50
And basically the reason that this works is because this right here is a quantity that equals one if you treat the, if you are using specific units in your answer.
01:04
So it is only useful when multiplying quantities with units is a valid point.
01:10
Units are treated as a factor so you can subject them to algebraic operations.
01:15
That's even more specific for why you would, because you're basically factoring out and then canceling the unit.
01:24
So this is an even better answer.
01:27
Okay...