Volume is the amount of 3-dimensional space occupied by an object and has nothing whatsoever to do with the molecular composition of the object. The volume of a 1" x 1" x 1" cube of lead is exactly the same as the volume of a 1" x 1" x 1" cube of butter or a 1" x 1" x 1" cube of anything for that matter. Lead and butter have a great many differences, but volume isn't a measure of any of them.
Since butter will occupy more space than an equal weight of lead, I would guess that butter has a greater volume.
A kilogram of butter as it is less dense than lead.
Yes, the volume of melted butter is less because the entrained air is released when melted.
Larger cells will have a greater surface area-to-volume.
Yes. That is what is meant by directly proportional.
That's not true. The molar volume of a gas is always greater than the molar volume of a liquid. I can't think of any exceptions to this.
They both weigh the same: 1kg = 1kg. The kg of butter has a greater volume and the kg of lead has a higher density.
Butter has greater volume than lead because butter has more mass.
They both weight a kilogram. Lead has a higher density.
The volume of lead will be greater than one gram of water. The density?æof lead is about 11 times more than that of water.?æ
the same
This depends on the mass.
aluminium
water has less density than lead. Mass depends on its volume
That depends on the amounts, of course - what exactly you are comparing. The buoyant force depends on the volume. For a certain volume of lead, there will be the same buoyant force as for the same volume of iron. On the other hand, since lead has a greater density, the buoyant force on a certain amount of MASS of lead will be less, compared to iron, since the same mass of lead will use up less volume.
It depends on if they are solid or liquid.
Both would weigh 1 Kilogram with a difference of volume.
We need to calculate the volume of a metal from the density to be sure. Density of pure gold = 19.3  g·cm-3Density of pure lead = 11.34  g·cm-3The volume of 20 g of gold = mass/density = 20 [g] / 19.3  g·cm-3 = 1.036 cm3 The volume of 10 g of lead = mass/density = 10 [g] / 11.34  g·cm-3 = 0.882 cm3 Hence, the volume of 20 g of gold is slightly greater than that of 10 g of lead. =========================