This sounds like another homework question – it is a question that you would want to answer yourself – have you tried the experiment?
Yes I have but I still don’t get the volume. I know the density is more than than the water if it floats, but that is the density. What about the volume?
This is really something you should discuss with your teacher so that you have a good understanding. In chemistry, the density of many substances is compared to the density of water. Example – does ice float on water or sink in the water? Because ice floats (as when you put ice in a glass of ice water), we can infer that ice must be less dense than water. Conclusion: The volume of ice must be greater than the same mass of liquid water.
Volume Increase of Ice – because of the empty space in the ice structure, it take up more volume than the liquid water molecules, so ice is less dense than liquid water.
If an object is less dense than water, it will float; if an object is more dense than water, it will sink. The equation for density defines it as an object’s mass divided by its volume. (d=m/v) Thus, density is inversely proportional to volume. If an object’s volume decreases, it becomes more dense, and therefore, will be the sinking cube. If an object’s volume increases, it becomes less dense, and therefore, will float.
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