Desk and plastic
solid subtanses are the solid stuff
Cotton candy is a solid because one you can eat a solid and not a liquid or gas and two because its substances and combined and together which make it a solid.
A paper is used in transferring solid substances so that we can filter the liquid substances.
homogeneous mixture
It's called sublimation. Not too many substances do this, but two common substances that do are carbon dioxide (CO2) and moth balls. The opposite process of going from a gas to a solid is called deposition.
we use scales to weigh solid
That would be Homogeneous
They are solid
Definitely not! Not even all the elements are solid, and there are millions of liquid organic substances.
Iodine and frozen carbon dioxide are two substances that sublime, which means they change from a solid directly to a gas without going through a liquid phase.
Generally salts are solid substances.
a solid