Thursday, Mar 5, 2009 - 4A

Reminded students that the write-up for the Distillation of Wood Lab is due next Tuesday. The lab should be typed but if they cannot type it then it must be very neatly hand written.

Reminded students that they should be writing a bit each night so that it doesn't come down to a massive amount of work at the end that they will rush to finish, or not be able to finish. By now students should be at least 75% of the way done. They should have completed:
.Cover page
.General Statement of Lab
.Designing the Investigation for Day 1 (Material list, Procedure, Full page diagram, Safety precautions)
.Collecting and Presenting Data for Day 1 (8 observations, data table, calculation section)
.Analyzing and Interpreting Data for Day 1 - Flow chart for Day 1 including what substances go into each box, what phase you have for each substance (solid, liquid, gas), what processes are indicated by the arrows and whether each process indicates a physical change or a chemical change.
.Designing the Investigation for Day 2 (Material list, Procedure, Full page diagram, Safety precautions)

Students should be working on the Summary for Day 1
. Summary: Summarize the results of your experiment in complete sentences.
. Questions:
. Conclusion: State a conclusion for your lab. Does this lab in any way relate to your life?
. Errors and Uncertainties
. Followup

Students also need to complete the write-up for Day 2 including
.Observations for Day 2 (at least 4)
. Analyzing and Interpreting Data - Flowchart summary of Day 2 of the experiment
. Summary
. Questions:
. Conclusion: State a conclusion for your lab.
. Errors and Uncertainties
. Followup

I answered any questions students had on the lab.

Students can get 2 extra credit points if they include a section on their cover sheet for their parents to sign verifying that they have read the report.

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Told students about the Sludge project and how it is a combination of 8 labs: (separation labs and identification labs)
Students need to keep notes on all of our preparation labs and keep the lab sheets so they will know what to do when they have to do the same labs for sludge.

Today we will do another separation lab with a bit of identification at the end.
Went through the procedure for the separation of a mixture lab, clearly telling students where to put all the substances they identify. For today, they should do everything except view the crystals under the microscope which will have to wait until the water has evaporated. If students do not finish the density analysis of the gravel and slag they can complete that next time.

Students did the Separation of the Mixture Lab and handed in their lab sheets.