Edexcel IAL Chemistry A2 6.P7 plot and interpret graphs
Graph marks reward presentation and interpretation together: label units, use enough grid space, plot accurately, draw the required fit and read values for decisions.
How this is tested
- Plot points with labelled axes, units and scales covering at least half the grid.
- Draw the required best-fit line or curve, including through the origin when specified.
- Use calibration or rate graphs to decide concentrations, specifications or reaction trends.