The point on a phase diagram at which all phases occur simultaneously is called the:

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.