Is this line real or imaginary?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers