1. Laboratory Write-up Format Copper Lab Chemistry A and B Cambridge-Isanti High School

2. General Considerations Title is underlined. Section headings are underlined and a colon is placed after the heading name. Cover page is preferable. Spelling and grammar will be graded. Quality and creativity never hurt.

3. Copper Lab I.M. Smart Block 2 Purpose/Objective: To take a known quantity of copper through five different reactions; observing the results of the reactions, and determining a percent yield for the copper. Materials: Procedure:

4. Materials 250mL beaker Ringstand with wire gauze 25mL graduate 50mL graduate Stirring rod Rubber policeman HNO 3 H 2 SO 4 NaOH Copper tinsel

5. Procedure Shown in its entirety Clear and to the point Leave out unneeded additions

6. Observations Clear and to the point. List or sentence format (no paragraphs)

7. Data Table Does not have to be in “table format” List only those items measured in the lab Proper units Equations?

8. Data Table Mass of Cu Tinsel Mass of evaporating dish Mass of dish and dry copper

9. Calculations Show all of your work Significant figures Proper units Equations?

10. Calculations Final mass of Cu Percent Yield

11. Equation Writing State reactants and products Addition symbols Arrow Subscripts HNO3 or HNO 3 Balance

12. Errors Experimentor: mistakes in the lab that were your fault. Experimental: mistakes in the lab that were beyond your control. List two of each kind.

13. Conclusion Relates back to the objective. “We were able to achieve our objective by taking the copper through five known conversions. Our percent yield was ____%. The theoretical percent yield was 101 – 103%. We believe ours did not agree due to __________________.”