Crystallization
A Process which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal
What is the definition of crystallization
Name of the first lab we did in this class
What is intro to the spectrophotometer
How synthesized the first aspirin?
Who was Felix Hoffmann
What are the 3 ways to classify pipets?
What is Accuracy, Drainage, and Type
On the Chemical hazard label what number is the least worrying, and what number is the most worrying
What is
0 - Least
4 - Most
Evaporation Crystallization and Cooling Crystallization
What is two main types of crystallization
All modes used throughout the year on the Cecil
What is Scan mode, Quantitative mode, Quick read
In Part A of the aspirin lab what chemical decomposes vey quickly, and brings the flask to a boil
What is Acetic anhydride
How do you distinguish a Blow out pipet?
What is two colored circles on the pipet
Draw and Label the Chemical hazard Label
What is
yes
The first step in the Crystallization process
What is the solution being heated in a container
Material used in first lab with spec 20 after taking blank
What is chalk
When the aspirin was first crystallized how long did it have to sit in the warm water bath
What is 15 minutes
what should you NEVER do with a pipet bulb
What is inverting the pipet
Difference between the MSDS and Safety data sheet
What is formatting, and length
Phase that has the properties of both solids and liquids
What is the crystalline phase
Purpose of Lab 2 (Only need 2)
What is
1.)Measure the absorption spectrum for each of the colored solutions
2.) Find the lambda max for each solution
3.)Combine colored solutions to test how it affects the spectrums
Where did Felix Hoffmann work when he synthesized the first aspirin
What is Bayer Chemical Company
What should you never do when using a micropipet (only need 2)
What is
1.) Never go down to the 2nd stop when withdrawing
2.) Never using a pipet without a tip
3.) Never lay down a pipet with liquid in the tip
4.) Never turn the pipet past the Highest or lowest volume
Can safety labels get combined, and if yes why would they be combined
What is yes and because there are different standards, and regulations at different points in time
The second phase of crystallization
What is Crystal growth
The Equation for A in the beers law lab
What is A=log(100%/%T)
What is the Chemical equation for Aspirin
What is C7H6O3 + C4H6O3 -> C9H8O4 + C2H4O2
What is the entire procedure for using pipet bulbs
What is
1.) Insert pipet stem into the end of the bulb next to the S and E buttons
2.) Press and hold A while sqeezing the air out of the bulb
3.) Insert end of Pipet into solution to be pipetted
4.) Press S for suction slowly
5.) Pipet above the 0 line for the first time to wet the glass
6.) Press and hold E to expel the liquid
What are the rules of the Lab
What is wear goggles, have closed toed shoes, long pants to cover at least the knees, have lab notebook, no food or drink in lab