True. The protons and neutrons together are dense and comprise most of the mass of the atom. The electrons "circle" around in a "cloud" so there is empty space in between the electrons.
No, mechanical or pressure waves can not travel through empty space
False, most of the volume of any substance is empty space, the nuclei take up very little space.
True, most of an atom's volume is the space in which electrons move.
true
It's false because the transfer of energy through matter by direct contact of its particles is conduction.Have a nice day :)
false
false
29
That's false. Outer space is empty, or nearly so. The air at sea level still has a density of about 1.2 kilogram per cubic meter. Much less than typical solid or liquid matter, but not quite empty either.
False
Most elements are metals.
true