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Most commonly available substances that are less dense than water is oil, alcohol and plastic. In fact, a number of organic solvents such as acetone, methanol and methylene chloride are also less dense than water. In addition, a number of different kinds of polymer are "lighter" than water, too.
Hmm... potassium and sodium? :D
Credit: To the other answer linked below.
What else can I help you with?
Does dense water sink or rise in comparison to less dense water?
Dense water sinks in comparison to less dense water.
Is water less or more dense than water?
Ice is less dense than water
Is ice less dense or more dense than water?
no
What object is less dense than water?
A wooden block can be less dense than water.
Is a rubber ducky more dense then water?
no beacause a rubber duck floats and if an object floats in water, is is less dense than the water if it sinks it is more dense
How can you determine whether solid object is more dense or less dense than water?
If more dense, it will sink when put into water; if less dense it floats.
Is chlorine less dense or more dense than water?
Chlorine gas is less dense than water, so it will float on top of water if the two are in contact.
Can you make oil less dense than water?
Oil IS already less dense than water.
Is liquid water less dense then Ice?
No. Ice is less dense than water. Because ice is less dense it displaces less water and floats. Water is most dense at 4o C. any change in temperature, either up or down, lowers the density.
What fruit is less dense than water?
Easy, put a fruit in water and if it floats it is less dense than water.
Icecubes float in water because they are less?
Dense
Does ice float because it is less dense than water?
Yes. Anything that is less dense than water will float on water.
