No. It gets hotter - that is not the same
No it decreases
Water atoms do not expand or multiply when heated. When water is heated, the heat energy causes the water molecules to move faster and farther apart, which results in the expansion of the water volume. The number of water molecules remains the same.
It gets bigger
There's no reason for the mass of anything to depend on its temperature.
They are malleable when heated and they are not water soluble.
It stays the same.
After water has been boiled, its mass will stay the same.
no
It stay the same
Under the same conditions (in particular, at the same surrounding atmospheric pressure), all water at its boiling point will be at the same temperature regardless of its starting temperature.
no they do not all stay in the same place because some birds live in water
As water at the bottom is heated, it rises and cold water replaces it. That's heated and the cycle continues until all the water is at the same temperature.