Lab Report:

Experiment 8: copper

Purpose:

The purpose of writing a partial lab report for Copper is to continue to familiarize you with technical scientific writing, data analysis, and its presentation.

Skills:

In this lab report you will:

• Analyze reactions of copper and its compounds from qualitative and quantitative experimental data.
• Continue to improve your scientific writing by composing a portion of a formal lab report (title page, results and calculations section, and post lab questions).

Knowledge:

This assignment will also help you to become familiar with the following important content information:

• Organize your data and calculations in a results and calculations section including:
  • Writing balanced chemical equation
  • Basic chemistry calculations: stoichiometry, percent recovery, percent error
• Analyze whether you would expect to lose or gain copper during each step of the reaction. Could you have both lost and gained product?

Tasks:

This exercise asks you to collect, organize, analyze, and evaluate data you collected in the lab. You will type a lab report that includes the following:

• Title page
• Procedure Reference and Changes
• Results and Calculations section
  • Table summarizing your major experimental results.
    • Balanced chemical equation
    • Type of reaction
    • Expect to gain or lose mass during each step. Explain your reasoning.
    • Initial mass of copper and mass of reclaimed copper.
    • Theoretical yield of copper compound for each step.
    • Percent recovery
    • Percent error
  • Show sample calculations (typed or handwritten) with values reported to the correct number of significant figures with units.
• Post Lab Questions

Criteria for Success:

We are building your report writing skills of organizing data, analyzing data, and summarizing data. Incorporate the feedback from your previously graded lab reports.

• As you write up your report:
  • Be sure to summarize your major data in your results and calculations section,
  • Make sure that your laboratory pages have the headers and footers completely fill out, and that your data and observations are complete enough for another student to use your lab notebook to complete the experiment.

• • Initial mass of copper	0.500 g
    Mass of evaporating dish	60.614 g
    Mass of evaporating dish and recovered copper	61.068 g