Demonstrate understanding of oxidation-reduction
Oxidation-reduction (redox) is about understanding how electrons are transferred between chemicals when they react. You need to show you can identify and explain these electron transfers using oxidation numbers, half-equations, and observations of what happens. This standard tests whether you understand the chemistry behind what you see happening in redox reactions.
You describe oxidation-reduction reactions, identify oxidants and reductants, assign oxidation numbers correctly, and write balanced half-equations and overall equations using proper chemistry language.
You explain the links between what you observe happening, the oxidation numbers, and what the equations show—making clear connections between the theory and the practical evidence.
You justify your answers by comparing or contrasting different redox reactions, evaluate why certain substances act as oxidants or reductants, and consistently demonstrate sophisticated understanding throughout using precise chemistry vocabulary and symbols.
Standards typically taken alongside or after this one. Same subject, grouped by level.