Because it just does. Alright, I will give a much more detailed explination...
The atoms inside the Lead have a source of meacliocional spacing (something that will makes atoms tightly packed up like you being squished in the crowd of getting in the number 1 bus in London), and it means more space for the atoms. Aluminium on the other hand, has a little spacing between atoms, and therefore I conclude that Lead is heavier than aluminium because of the fact of lack of meacliocional spacing.
x-BamItzScienceGeek-x
Lead is denser than ice.
Stainless steel is heavier then aluminium.
Lead has a higher atomic number than iridium, which means a lead atom is heavier than an iridium atom. however iridium is denser, therefore if you had a block of iridium and a block of lead,the iridium block would be heavier
At "normal" temperatures, Mercury is denser than any of those substances ... slightly more so than lead, somewhat more so than copper, and a lot more so than aluminium.
Aluminum has about 1/3 the density of iron, therefore a given volume of aluminum would weigh about 1/3 as much as the same amount of iron. So no, aluminum is not heavier than iron; far from it.
There are many elements that are heavier than iron, including lead, gold, platinum, osmium, uranium, etc. Look at the periodic table of the elements.
Lead
Ice is heavier than aluminium. You may think that ice is just water really it holds more (volume) than aluminium.
Stainless steel is heavier then aluminium.
Lead is heavier than iron.
Iron is heavier than aluminium. Aluminium is easier to form, shape and machine.
Aluminium is more easily oxidized than lead.
Lead is much heavier than stainless steel.
Yes, uranium is more dense (heavier) than lead.
Aluminium. Zinc is around two and a half times heavier (more dense) than Aluminium.
Iron has a higher density than aluminum
No, lead is more dense than aluminium.
No. The specific gravity of lead is 11.35 and the specific gravity of diamond is 3.5, which is above average, but not heavier than lead.