Explain why water vapors are coming out from the glass with warm water, 80C.

Justification:
Evaporation, the process by which liquid water turns into invisible water vapor, occurs at all temperatures. However, the rate of evaporation increases significantly with temperature. The warm water at $80^\circ \text{C}$ has a much higher rate of evaporation compared to the cold ($5^\circ \text{C}$) or normal ($25^\circ \text{C}$) water. The visible "steam" above the $80^\circ \text{C}$ water is not actually water vapor (which is invisible), but rather tiny liquid water droplets formed when the hot, invisible water vapor mixes with the cooler air above the glass and condenses.

Q9. The steam coming from a cup of hot tea is primarily due to evaporation.

Justification:
Evaporation is the process where liquid turns into gas (vapor) from the surface of the liquid at any temperature below its boiling point. Boiling, on the other hand, is a bulk phenomenon where vaporization occurs throughout the liquid at a specific boiling temperature. Hot tea is typically served at temperatures below the boiling point of water. The visible "steam" (condensed water droplets) above the tea forms as the rapidly evaporating water vapor from the hot surface cools and condenses in the surrounding air.