I would say 2. suspension. hope it helps.
Answer:
cataylst
Explanation:In a chemical reaction, a catalyst changes the activation energy
<span>KOH(aq) + Fe(NO3)3 --> KNO3(aq) + Fe(OH)3(s)
</span>Yes, a chemical reaction will occur
True, Crude oil is a type of liquid thereofre can flow through the pourus layer but seeming how impermeable means to not allow fluid to pass it would only make sense that the fluid is trapped between the two.