Project Report on Evaporation at Velammal New Gen School

The process by which a liquid changes into a gas at the surface of the liquid.

The amount of heat energy required to convert 1 gram of a liquid to vapor at its boiling point.

Factors like temperature, surface area, humidity, and wind speed can influence how quickly a liquid evaporates.

Evaporation plays a crucial role in processes such as water purification, distillation, and the formation of clouds.

The time it takes for a given volume of liquid to evaporate completely under specific conditions.

The process of transforming a liquid into a solid through cooling.

The process of a substance changing from a gas to a liquid.

The process of a substance changing from a liquid to a solid.

A process where a liquid changes into a gas at the surface of the liquid.

The energy needed to break the bonds between liquid molecules and turn them into gas.

The rate of evaporation increases as the temperature rises. Warmer liquids have more energetic molecules.

More surface area means more liquid molecules are exposed to air, increasing the rate of evaporation.

Molecules with enough kinetic energy can overcome intermolecular forces and escape into the gas phase.

Evaporation leads to cooling of the remaining liquid because the molecules with the highest energy escape.

Evaporation is the opposite of condensation, where a gas changes back into a liquid.

Evaporation plays a vital role in the water cycle, replenishing the atmosphere with water vapor.

The larger the surface area of a liquid, the more molecules are exposed and can escape into the gas phase, resulting in faster evaporation.

Air pressure acts as a force pushing down on the liquid surface, hindering evaporation. Lower air pressure allows more molecules to escape, leading to a faster evaporation rate.

The rate of evaporation depends on the type of liquid molecules. Some molecules have stronger attractions, making them harder to evaporate.

High humidity means the air already holds a significant amount of moisture, reducing the space for additional water molecules. This slows down the rate of evaporation.

The rate of evaporation is influenced by the movement of air above the liquid surface. More wind or air movement removes escaping molecules, making space for further evaporation.

Evaporation keeps the remaining liquid cooler because the escaping molecules are the high-energy ones, leaving behind lower-energy molecules.

The attraction between molecules that arises from temporary, uneven charge distributions within molecules. These weak forces are present in all substances but are especially important in liquids.

The rate of evaporation is influenced by the strength of intermolecular forces. Liquids with strong intermolecular forces, such as water, evaporate slowly because the molecules are tightly bound together. Liquids with weak intermolecular forces, such as acetone, evaporate quickly because the molecules are more loosely bound.

The experiment measured the time it took for equal volumes of water and acetone to evaporate completely. Acetone evaporated much faster than water, indicating weaker intermolecular forces in acetone.

The experiment compared the evaporation rate of acetone in two petri dishes of different sizes. The acetone in the larger petri dish evaporated faster, confirming that larger surface area increases the rate of evaporation.

The rate of evaporation is affected by air currents. When there is more air movement, it carries away the evaporated molecules, allowing more liquid to evaporate.

A faster flow of air (like a breeze) increases evaporation rate. The wind carries away the evaporated molecules, allowing more liquid molecules to escape.

The rate of evaporation is affected by the amount of water vapor already present in the air. Higher humidity means less space for more water vapor, slowing down evaporation.

Evaporation is a process of converting a liquid into a gas, while condensation is the opposite process where a gas turns into a liquid.

Evaporation is a physical process that doesn't alter the chemical composition of a substance. It's just a change in state from liquid to gas.