(PLS HELP) Describe three of your favorite foods. How do they change phases of matter when they are heated?

Can someone me with these questions plz.

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

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?