Question

What happens when an object has a density greater than that of the surrounding liquid?

Answer 1

it sinks into the liquid

(e.g. water sinks under oil as it is more dense)

Answer 2

Answer: Thus, when an object has a density greater than that of the surrounding liquid then the object will sink into the liquid.

Explanation: Density is defined as mass per unit volume.

Mathematically, $Density= \frac{mass}{volume}$        

This shows that density is proportional to mass of the object, that is, more is density more will be the mass of object.