Demonstrate understanding of oxidation-reduction processes
NZQA suppresses grade rates for low-cohort standards.
You need to show you understand how oxidation and reduction reactions work, including how to use electrode potentials to predict whether reactions will happen spontaneously. This standard covers reactions in electrochemical cells (like batteries) and electrolytic cells (where you use electricity to force a reaction), and you may need to do calculations with electrode potentials.
You describe what happens in redox reactions and correctly use chemistry symbols and vocabulary, possibly including some calculations with electrode potentials.
You explain the links between electrode potentials, the equations, what you observe happening, and your calculations—showing why reactions are spontaneous or non-spontaneous.
You compare and contrast different redox processes, justify the links between all components (potentials, equations, observations, calculations), and consistently use correct chemistry language throughout to show deep understanding of how spontaneity works.
Standards typically taken alongside or after this one. Same subject, grouped by level.