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Procedure:
1. Simultaneously, place two drops each of the four liquids separately on a clean sheet of paper. Observe if the liquids evaporate at room temperature. If they do, take note of the relative length of time it takes two drops of each to evaporate. Record the length of time (in minutes)
2. Put a few drops of water at the back of your left hand and the same number of drops of acetone at the back of your right hand. Observe how your hands feel. Record the length of time.
3. List down the liquids according to the speed of evaporation, that is, from fastest to slowest.
Liquids
(Water, Acetone, Alcohol)
1st:
2nd:
3rd:
Length of time(seconds)
1st:
2nd:
3rd:
Q1. Do liquids evaporate at room temperature?
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Q2. Which liquid evaporates first? second? last to evaporate?
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Q3. What is evaporation?
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1.It turns out that all liquids can evaporate at room temperature and normal air pressure. Evaporation happens when atoms or molecules escape from the liquid and turn into a vapor.
2.?
3.evaporation is a time-tested deposition technology for producing dense, high purity coatings. ... High voltage is applied between the filament and the hearth to accelerate these liberated electrons towards the crucible containing the material to be deposited.