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In the General, Organic and Biological Chemistry (GOB) Lab Kit: Survey of Oxidation and Reduction Reactions, investigate the role of electron transfer In the reactions of iron(II) and iron(III) compounds with oxidizing and reducing agents, respectively.

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General, Organic and Biological Chemistry Iron exists in the body in two forms—iron(II), Fe2+, and iron(III), Fe3+, ions and their compounds. Interconversion of the two forms of iron takes place via the loss or gain of an electron. Investigate the role of electron transfer in the reactions of iron(II) and iron(III) compounds with oxidizing and reducing agents, respectively. The results will be analyzed to determine the change in oxidation state for each reactant, the oxidation and reduction half-reactions, and the balanced chemical equations for the redox reactions. Complete for 24 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Planning and carrying out investigations
Analyzing and interpreting data
Engaging in argument from evidence
Obtaining, evaluation, and communicating information

Disciplinary Core Ideas

MS-PS1.B: Chemical Reactions
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Patterns
Cause and effect
Scale, proportion, and quantity
Systems and system models

Performance Expectations

MS-PS1-1. Develop models to describe the atomic composition of simple molecules and extended structures.
MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
HS-PS1-1. Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
HS-PS1-2. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.