Water Evaporation

• The rate of evaporation is affected by factors such as humidity, surrounding temperature, exposed surface area of water, and movement of air.
• Evaporation of water is a process that occurs at the surface of water, changing it into water vapour, and can happen at any temperature.
• A larger exposed surface area of water allows more water molecules to escape, leading to an increased rate of evaporation.
• The rate of evaporation increases as the surrounding temperature increases, as water molecules gain more energy and escape into the air more easily.
• Dry air contains less water vapour and can hold more water molecules, resulting in an increased rate of evaporation as humidity decreases.
• The movement of air, particularly at higher speeds, sweeps away water vapor in the air and increases the rate of evaporation.
• Applications of evaporation of water in daily life include drying clothes faster, obtaining sea salt from seawater, preserving dried seafood, and using a hair dryer to increase evaporation.
• When humidity increases, rate of water evaporation decreases
• When the air movement increases, the rate of water evaporation increases
• When the surrounding temperature increases, the rate of water evaporation increases
• When the surface area increase, the rate of water evaporation increases
• Fish is dried to keep food longer. This is because every living thing including microorganisms require water to survive. Therefore, the fish is dried to remove water content. Thus no microorganisms can live on it, and the food can be kept longer compared to the wet food.
• Solute is a substance that can dissolve in a liquid