Question 5
Which will remove grease from your hands, and why?
The right answer is the one marked above.
Kerosene, because both grease and kerosene are non-polar. Like dissolves like: substances of similar polarity dissolve in one another.
Water is polar and grease is not, which is why washing in water alone leaves it behind. The same rule explains why sugar failed to dissolve in kerosene in the activity before.