Teacher: Well, atoms are the tiny particles that are too small to see, even with a microscope. So if people were the size of an atom, the entire population of the world would fit into a box about ...

The size of the atoms and their mass has a lot to do with the density of the substance Another factor is how the atoms are arranged in the substance. Polyethylene is made up only of carbon and ...

The units for density will be g/cm³. Arrangement of atoms in different metals is similar. Individual atoms are packed very close together. Therefore, differences in density between metals are usually ...

Molecules are made from between 2 and several hundred atoms, so they are larger than ... has a diameter of 1 x10-14 metres. Compare the size of the nucleus with the size of the atom.