Today in chemistry the class worked on our vaporization labs. For the vaporization lab we had to create a google spreadsheet of four different liquids, two of which each person was responsible for. After the spreadsheet we were supposed to have a graph of the data done for today.
In class today everybody got a list of questions over the lab, the list is below.
Vaporization Lab Questions
1. Is vaporization an endothermic or exothermic process? Explain your answer and use diagrams to show what is happening to the molecules.
2. Why is the temperature of the thermometer decreasing as the liquid evaporates?
3. Rank the liquids as to which you think is the most volatile( vaporizes the easiest) to least volatile. Explain why you ranked the liquids in this manner.
4. Compare graphs with another group and determine whether your ranking is accurate. List any differences in information.
5. Find a group that had two liquids that you did not have and determine where these liquids would fit into your ranking.
6. Calculate the slopes of each line for every 10 seconds.
7. What do the slopes of the lines tell you?
8. The slopes should be negative. Why should they be?
9. How did the slope of the lines change from the beginning to end and how do you think this occurred?
10. What do you think makes some liquids evaporate quickly and others more slowly?
11. How can you decrease the time it takes for a liquid to vaporize?
12. If the slope of a line from this experiment was 1.4 ୦C/sec, how much would the temperature change in 3.5 seconds?
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