If an object or liquid is is less dense than the liquid in which it floats, that's the reason why it floats, because whatever is less dense floats. If you meant to ask why something MORE dense can float in something LESS dense, one answer is surface tension.
Liquids that have a greater density than water, will provide more buoyancy to objects floating in it. Salt water is more dense than fresh water, so objects will float higher in it.
Surface Tension-Surface tension is a property of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in floating of some objects on the surface of water, even though they are denser than water, and in the ability of some insects (e.g.Water striders) and even reptiles (basilisk) to run on the water surface. This property is caused by cohesion of like molecules, and is responsible for many of the behaviors of liquids.
Gas is not dense, solids should be dense, liquids are dense, but not as much as solids.
All liquids are made up of matter (atoms and molecules) which is what gives them their densities. Liquids are dense because they are made up of matter so all liquids have the same ingredient to make them dense.
No. Several liquids, including gasoline, oil and alcohol, are less dense.
There are many liquids more dense than water. The most commonly thought of is probably Mercury.
Some liquids are denser than others. In general, everyday experience, most liquids are denser than gases, but not as dense as solids. There are some exceptions to this rule.
More dense.
Gauge its buoyancy. Put it in the water. objects that are less dense will float while objects that are more dense sink.
some solids are more dense than liquids (they sink) but others are less dense which is why not all solids sink
Large dense objects, and the closest objects.
Objects that float in water are less dense than water; while objects that sink in water are more dense than water.