Week 5

                   This week we did multiple labs and worksheets to prepare for our test on Thursday. We also started a new unit the we will continue throughout this following week. This week we went over Empirical and Molecular formulas. We had a worksheet to practice these formulas and demonstrate our skills. The questions on this worksheet had questions such as the following: Find the empirical formula of a compound containing 32.0g of bromine and 4.9g of magnesium. We solved questions like these in the beginning of the week on worksheets like this.

                   We worked on this sheet in table groups to ask questions if we didn't understand certain problems. One question that I had trouble with and asked for help from my table/teacher was number seven. This was on the back of the paper: Find the percentage composition of a compound that contains 1.94g of carbon, 0.48g hydrogen, and 2.58g of sulfur in a 5.00g sample of the compound. We reviewed this question on the whiteboards and I understood it. 

                   We then had an empirical formula lab. We massed our clean, dry beaker. Then we added zinc pieces to the beaker. Adding 50 mL of 3M HCI after, we recorded our observations in our composition notebooks. 

                   This is a picture of the procedure we followed to conduct this lab. I think that I understood this lab very well. We wen over our results in class and I had all of the subjects I was concerned about reviewed. On Wednesday we worked on the review guide for the up coming test Thursday. Each group was assigned a job of white boarding a section on the review guide. This helped many of us (including me) fully comprehend the material for the test. I had a few questions but I didn't have to ask them because they were answered in the whiteboard discussions/presentations. 

                 Below is a picture of part of our review guide. It gives you an idea of all the material we've learned for this unit. It includes previous weeks that led up to the test. As you can see, this correlates with some of the images that I've placed above. It's a summarization of everything this unit! 

                 For this week I think my participation was well during table discussions and contributing ideas for our whiteboards, but I didn't ask my questions in class this week. That's something I can work on to do better at this week. That concludes my fifth week in Chemistry 2A.