A student drew a representation of the atoms of a solid. The illustration shows closely packed atoms vibrating, but remaining in the same relative position. Which of the following changes must the student make to the illustration to
accurately represent the same substance in the liquid phase?

The modern periodic table has groups.

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.