9.1—Understand, in terms of the collision theory, the effect of changes in concentration, temperature, pressure and surface area

Understand, in terms of the collision theory, the effect of changes in concentration, temperature, pressure and surface area on the rate of a chemical reaction.

Use —understand, in terms of the collision theory, the effect of changes in concentration, temperature, pressure and surface area to connect the rule to the data and decision in the question.

This matters because —understand, in terms of the collision theory, the effect of changes in concentration, temperature, pressure and surface area determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply —understand, in terms of the collision theory, the effect of changes in concentration, temperature, pressure and surface area to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: —Understand, in terms of the collision theory, the effect of changes in concentration, temperature, pressure and surface area is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.