Research question: Does the temperature of water affect its rate of evaporation? Assuming that water is kept in the same container.

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Lab Report: Rate of Evaporation

Research question:

Does the temperature of water affect its rate of evaporation? Assuming that water is kept in the same container.

Introduction:

Water is one of the most important element for life to exist. We need water everyday in order to survive. Water is also known as H2O in its chemistry form, there are three phases in which water can stay: solid, liquid and gaseous state. It is common knowledge that below 0˚C, water will freeze, at 100˚C it will boil, and from 0 to 100˚C, it will remain its liquid state. Although when liquid water is kept at constant temperature it seems like it is not changing, the water is actually evaporating slowly. If a glass of water was left out for long enough, after some time the water will have completely evaporated.

In this experiment, we will try to find out whether the temperature affects the rate of evaporation of water.

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The hypothesis is that is does, and the higher temperature water has, the faster the evaporation will be because the particles will gain more kinetic energy and therefore will more easily get to the speed at which it can escape from the liquid and turn into vapour. For example, when water is spilled, it dries off faster in warm weathers than in cold weathers.

The variables:

Dependent variable:

  • The time it takes for 20ml of water to evaporate.

Independent variable:

  • The temperature of the water in degrees Celsius.

Controlled variables:

  • The volume of the container; ...

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