Final answer:
Oleic acid would look different than sugar and salt when added to water because it is an oil and would form a separate layer on the surface of water, whereas sugar and salt would dissolve in water.
Step-by-step explanation:
If oleic acid was added to water, it would look different than what was shown for sugar and/or salt. Unlike sugar and salt, oleic acid is an oil and not a solid. It would float on the surface of the water and form a separate layer. Sugar and salt, on the other hand, would dissolve in water and create a homogeneous solution.