both. It depends what substance it is. For example: solid water (ice) melts into liquid water (water) and then that melts into gas water (water vapour). Another example is that frozen carbon dioxide (c02)which is a solid also known as dry ice, melts into c02 gas hence the name dry ice because when it melts it goes straight into a gas state.
It is false that an ice cube melts when it's mechanical energy increases.
True
True.
true
it is true atoms in a gas move faster than a liquid and atoms in a liquid move faster than atoms in a solid
false
It is false that an ice cube melts when it's mechanical energy increases.
It is a true statement that frozen water melts. As ice or frozen water rises in temperature, it will slowly change into a liquid state. It would be false to say otherwise.
True, a wet rock melts at a lower temperature!
true or false? the crust is the earths only solid layer or part
True.
False
Yes, sublimation is a change from solid to gas.
True
That statement is true.
true
true