A system reaches stable concentrations even though microscopic reactions continue.
Learning target
Build an initial model and explanation for: How can forward and reverse processes continue while concentrations remain stable?
Evidence task
Record observations, questions, an initial model, and one claim that could be tested. Use these concepts where relevant: dynamic equilibrium; equilibrium constant; reaction quotient concept.
Show units, setup, calculation or graph reasoning, then write what the quantitative evidence can and cannot establish about: How can forward and reverse processes continue while concentrations remain stable?
Use the course safety charter. If supervision, facilities, materials, or conditions are not appropriate, use the supplied-data/simulation alternative rather than improvising hazardous procedures.
Evidence task
Record variables or design constraints, procedure/model, observations/data, and one revision you would make after reviewing the evidence.
Answer the essential question: How can forward and reverse processes continue while concentrations remain stable?
Mastery evidence
Submit a claim, at least two specific pieces of evidence, reasoning that connects them, one limitation/counterclaim, and a correction note for any essential concept below 80%.
Portfolio
Select one artifact from this week and explain why it is trustworthy evidence of growth.