How can you make something float sinks?

Answer 1

Yes you can make something that sinks float! All you have to do is add a good amount of salt.

Answer:

Objects will only float in liquid that is denser than the object. This gives you two options. You can either:

• increase the density of the liquid or
• reduce the density of the object.

To increase the density of the liquid you can dissolve a solute into the liquid. Salt is one option, but a nice thick sugar solution would be even better. If the only criteria is that the object must float you could replace the liquid with very high density fluid like Mercury or molten metal. If the density is close to being "dense enough" simply cooling the liquid might be enough of a change.

To decrease the density of the object you want to float is harder. You can change the shape of the object so it becomes like a boats hull or an empty gasoline drum.