Which has the greater density 5 kg silver or 10 kg steel?

Answer 1

Uranium is more dense than lead. The reason that it is more dense is because if we compare a given volume of space that uranium takes up and find its weight, it will be greater than the weight of lead that takes up that same volume of space that the uranium did. The uranium is "more closely packed" as regards material in an individual atom and also "more closely packed" on a macro-atomic scale where the atoms are free to form whatever configurations they wish to make in a solid. Both materials are metals, and they both form metallic crystal structures. These two considerations, the "density of the atom" and the "density of a bunch of atoms grouped together" in a solid determine the density of these materials. Note that this is a situation comparing two metals. If we compared the density of lead to the density of, say, radon, we are comparing the density of a metal to the density of a gas. The gas, radon, doesn't have a chance; it is much less dense. But note that the "atomic density" of radon is higher than that of lead. That is, looking at the number of protons and neutrons in a given atom and the volume of space that atom occupies, radon has more weight per unit of volume (a higher density) than lead - at least on an atomic scale (comparing one atom to another). However, radon is an inert gas, and because of this, atoms of radon will not "pack together" like lead atoms will. The atoms of radon want lots of space between themselves, so they disperse, and on a "large scale" the radon is less dense than the lead. And that's the way we generally look at density - on the large scale (as opposed to just one atom). Density is a ratio of the mass of a material per a unit of volume of that material, so the actual masses of the two metals (the 5 kg of Pb and the 10 kg of U) really don't matter. The key in comparing the density of two materials is to compare identical volumes of the materials, and not two amounts of them by weight. In the case of uranium and lead, the uranium weighs 19.1 grams per cubic centimeter, while lead, which we know is pretty "heavy" stuff, weighs 11.34 grams per cubic centimeter. That makes uranium over half again as dense as lead. Just for fun, the density of liquid Mercury is 13.534 grams per cubic centimeter. That means lead will float on liquid mercury.

Answer 2

The density of lead (Pb) in solid state at approximately 20-celsius (room temperature) is 11.34-grams x cubic centimeter. The density of solid aluminum under the same conditions is 2.70-grams x cubic centimeter. Thus in solid forms and at room temperature, lead is of much greater density.

Answer 3

i have to do the s ame problem for physics, I thinks its the 5 kg silver because it takes up less volume.

Answer 4

Steel has a greater density than silver. Therefore, 10 kg of steel will have a greater density than 5 kg of silver.