To see how one variable affects the speed at which alcohol evaporates.

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Evaporation Of Alcohol

Aim:

To see how one variable affects the speed at which alcohol evaporates.

Background Information:

I already know that forces of attraction between particles in a liquid are weaker than those in a solid. Liquids cannot be compressed because there is no space between the particles. Particles in a gas move quickly in all directions. Gases are easily compressed because there is more space between the particles. When a substance is heated it has more energy to escape the forces of attraction between the particles. I know that alcohol is very volatile compared to water. When a liquid is heated it will evaporate and become a gas. Many things affect the rate of evaporation:

Room temperature

Liquid temperature

Surface temperature

Surrounding wind speed

Surface area of alcohol

Concentration of alcohol

Barrier of container alcohol is in.

Prediction:

I think that the 70 C experiment will make the most alcohol evaporate and the 30 C experiment will evaporate the least. I think this because heat speeds up the random movement of the molecules