Water droplets collect on the outer surface of a glass container containing ice due to condensation. When warm, humid air comes into contact with the cold surface of the glass containing ice, the air cools down, causing water vapor in the air to condense into liquid water droplets on the glass surface.

Solids have a fixed shape because their particles are held closely together by strong intermolecular forces, restricting their movement to vibrational motion around fixed positions. Liquids and gases, on the other hand, do not have fixed shapes because their particles are free to move past each other and take the shape of their container due to weaker intermolecular forces.

It is advisable to use a pressure cooker at higher altitudes because at higher altitudes, the atmospheric pressure is lower, which lowers the boiling point of water. Using a pressure cooker increases the pressure inside the cooker, allowing water to boil at a higher temperature and cook food faster.

Factors that affect evaporation include temperature, surface area, humidity, and air movement. Higher temperatures increase the rate of evaporation, as does increasing the surface area of the liquid exposed to the air. Lower humidity levels also promote evaporation, while air movement can carry away evaporated molecules, allowing more liquid molecules to escape into the air.