Question
I just took my quiz and I'm confused because I got it wrong.
It asked which one is not a pure substance?
A. Ammonia
B. Steam
C. Gasoline
D. Iodine Crystals
I was running out of time and I chose Ammonia and I see it was a pure substance but I see the other three are too. I'm confused. Thank you
It asked which one is not a pure substance?
A. Ammonia
B. Steam
C. Gasoline
D. Iodine Crystals
I was running out of time and I chose Ammonia and I see it was a pure substance but I see the other three are too. I'm confused. Thank you
Answers
oobleck
gasoline is a complex mixture of various hydrocarbons.
All the others consist of only one type of molecule or atom
All the others consist of only one type of molecule or atom
Stephanie
Okay thank you so much. I was reading somewhere it was considered a pure substance
DrBob222
It is true that some math/chemistry problems involving gasoline will say assume gasoline is octane, C8H18; however, it really is a complex mixture of hydrocarbons. In fact the composition changes with the season and the altitude of the area in which it is sold/used.