Notebooks should be kept by experiment, not by date. Please divide the experiments by session, but they can be all uploaded in the same document. You may also post pictures of your physical notebook if typing it out is not available.
Each different experiment, even those performed in the same session, should have their own experiment.
Introduction/goals — should be what we’re doing and WHY?
- Why are we doing this exercise?
- What does doing this exercise tell us about the organisms, the water sample, the environment, etc.?
- Example: Bacitracin Susceptibility Test (this is ONLY an EXAMPLE)
“The purpose of the bacitracin susceptibility test is to presumptively identify β-hemolytic group A Streptococci from other β-hemolytic Streptococci. It also can differentiate between Staphylococci and Micrococcus and/or Stomatococcus. The test relies on the use of the antibiotic bacitracin, which inhibits cell wall synthesis in growing cells. Therefore, the antibiotic would inhibit the growth of susceptible cells. We will swab plates with different organisms and place a disk infused with the antibiotic bacitracin on top. We are looking for inhibition of growth around the disk. A zone around the disk of 10 mm or greater would be interpreted as susceptible.”
Objectives: (Hypothesis)
Materials and methods are the day’s protocols for the lab found in your lab manual.
Results: Including calculations (You must show your work)
Conclusions/ Discussion
- What do your results mean? Why are they significant? Was this what you expected? Why or why not?
Observe reactions involving metals
This phase has been completed.
Repeat steps 1-5 for each mixture
- To a clean test tube, add a piece of metal. Record your observations in Lab Data
- Examine the appearance of solution. Record your observation in Lab Data
- To test tube, add dropperful (~ 1 mL) of solution
- Observe mixture in test tube and check temperature. Record your observations in Lab Data. Select all that apply
- Identify products formed in mixture. Select all that apply
- Pour mixture in “Chemicals for Disposal” beaker, then place used test tube in wash bin
- Iron and 3 M sulfuric acid
- Calcium and 6 M hydrochloric acid
- Iron and 0.1 M copper(II) sulfate
SYNETHESIS OF CALCIUM CARBONATE:
- se clean graduated cylinder to transfer approximately 100 mL of 0.20 M aqueous sodium carbonate to clean beaker. Record actual volume and molarity in Lab Data
- Use clean graduated cylinder to transfer approximately 100 mL of 0.10 M aqueous calcium chloride to same beaker. Record actual volume and molarity in Lab Data
- Place beaker with mixture on hot plate and heat. Record your observations in Lab Data
- Use clean stir rod to stir mixture
- Place beaker on bench top to cool
SEE REPORTS ATTACHED FOR BOTH EXPERIMENTS AND SAMPLE ON HOW THE LAB SHOULD LOOK. THANK YOU