Question

when boiling, the total mass of liquid and vaporized water (1 point)
○ decreases.
○ fluctuates.
○ increases.
○ stays the same.

Explanation:

According to the law of conservation of mass, in a closed system (assuming the boiling process is in a closed or accounted - for system), the total mass of substances remains constant during a physical change like boiling. When water boils, liquid water turns into water vapor, but the total mass of the liquid water and the vaporized water (water vapor) does not change as no mass is added or removed from the system of liquid and vaporized water.

Answer:

D. stays the same.