Steam
Yes, fluoride can evaporate from water when it is heated.
Evaporate?
Yes, it is normal.
Yes, this water is evaporated.
It evaporates
At higher temperature the continuous movement of water molecules is accelerated.
Copper sulfate solution does evaporate when heated. As the solution is heated, the water molecules in the solution gain enough energy to overcome the intermolecular forces holding them in the liquid state, and hence evaporate into the air, leaving behind solid copper sulfate crystals.
Yes, it is true.
Eventually if heated long enough (and hot enough) all the water would either eat the world or MELT (turning into steam), leaving behind nothing but solid salt behind. This is one way that you can remove salt from sea water in fact.
When water is heated a physical change may take place. The water may evaporate and become water vapor, but the chemical makeup of the water (H2O) will not change.
Water in a preheated pan may not evaporate immediately because the water needs to reach its boiling point before it evaporates. Once the pan reaches a high enough temperature to boil the water, the water will start to evaporate into steam.
When water is heated, the particles in the water gain energy and move faster, causing them to spread out. This leads to the water molecules breaking free from their attractions and transitioning into vapor, resulting in evaporation.