Chapter summary
Data and Experimental Skills, at a glance
Read unfamiliar evidence, make useful measurements and explain what a result can support.
SEC G2 Science K223 / K225 (2027)
Quick revision
Revisit the essentials, then return to an explanation when you need it.
Read the requested quantity or claim first. Select the relevant evidence, state the chemical connection and give a result with its unit or a justified conclusion.
| Question | Check |
|---|---|
| What do the axes mean? | Distinguish accumulated amount from its rate of change |
| Is the comparison fair? | Check temperature, amounts and other potentially changing variables |
| What does the uncertainty affect? | Trace its effect through the calculation; do not assume every error raises the answer |
| How far can I conclude? | Distinguish interpolation from extrapolation and evidence from an untested explanation |
For a G2 practical question: choose suitable apparatus, read scales at eye level, record raw readings with units in the table heading, describe what you see before concluding, and suggest a specific improvement rather than "be more careful".