, Why is eye protection required in the lab? - CORRECT ANSWERS-to protect your eyes
from harmful chemicals
What is the policy on doing unauthorized experiments in the lab? - CORRECT
ANSWERS-it is not allowed
What is the laboratory dress code? - CORRECT ANSWERS-closed-toe shoes, long
pants and appropriate shirt
What is the policy regarding food and beverages in the lab? - CORRECT ANSWERS-
must be discarded before entering lab
What chemical compound is in the hoods and is used as a sweeping compound for all
spills? - CORRECT ANSWERS-sodium bicarbonate / kitty litter
What should be done if you get acid or base on you? - CORRECT ANSWERS-go to the
shower and remove all clothing
Should a hotplate always be operated at the highest position? What is the max setting?
- CORRECT ANSWERS-no; 3
Describe and sketch the plot of Temperature vs. Time for the evaporation of alcohol.
Why does the plot appear as it does? (explain any increases/decreases in
temperature)? - CORRECT ANSWERS-- when you stick the probe in the alcohol, the
temperature is going to be at its highest point
- when the probe is removed, the temperature will immediately decrease and then
increase again until it has reached room temp
- then it will flatten and remain flat
Describe and sketch the plot of Temperature vs. Time for the freezing point of Lauric
Acid. Why does the plot appear as it does (there should be 3 important "sections" in the
plot, explain what is happening in each)? - CORRECT ANSWERS-- in the first part of
the graph, or increase in temp, the probe is introduced to the hot temp of Lauric Acid in
its liquid state -- even though it has been introduced to cold water
- in the middle of the graph, the melting point is identified as the flat line. this is because
the lauric acid has once again solidified
- soon though, the lauric acid temp begins to decrease to its freezing point
DENSITY - CORRECT ANSWERS-...
Density - CORRECT ANSWERS-mass divided by volume (d = m /v)
Specific Gravity - CORRECT ANSWERS-the ratio of the density of a substance to the
density of water
from harmful chemicals
What is the policy on doing unauthorized experiments in the lab? - CORRECT
ANSWERS-it is not allowed
What is the laboratory dress code? - CORRECT ANSWERS-closed-toe shoes, long
pants and appropriate shirt
What is the policy regarding food and beverages in the lab? - CORRECT ANSWERS-
must be discarded before entering lab
What chemical compound is in the hoods and is used as a sweeping compound for all
spills? - CORRECT ANSWERS-sodium bicarbonate / kitty litter
What should be done if you get acid or base on you? - CORRECT ANSWERS-go to the
shower and remove all clothing
Should a hotplate always be operated at the highest position? What is the max setting?
- CORRECT ANSWERS-no; 3
Describe and sketch the plot of Temperature vs. Time for the evaporation of alcohol.
Why does the plot appear as it does? (explain any increases/decreases in
temperature)? - CORRECT ANSWERS-- when you stick the probe in the alcohol, the
temperature is going to be at its highest point
- when the probe is removed, the temperature will immediately decrease and then
increase again until it has reached room temp
- then it will flatten and remain flat
Describe and sketch the plot of Temperature vs. Time for the freezing point of Lauric
Acid. Why does the plot appear as it does (there should be 3 important "sections" in the
plot, explain what is happening in each)? - CORRECT ANSWERS-- in the first part of
the graph, or increase in temp, the probe is introduced to the hot temp of Lauric Acid in
its liquid state -- even though it has been introduced to cold water
- in the middle of the graph, the melting point is identified as the flat line. this is because
the lauric acid has once again solidified
- soon though, the lauric acid temp begins to decrease to its freezing point
DENSITY - CORRECT ANSWERS-...
Density - CORRECT ANSWERS-mass divided by volume (d = m /v)
Specific Gravity - CORRECT ANSWERS-the ratio of the density of a substance to the
density of water
