Grade 11 · Science
Interpret evidence about reaction rates practice
Use stated controlled comparisons and measured amounts per time to evaluate a reaction-rate claim.
Opening your practice adventure…
Try a sample
Three matched trials produce rates of 2.9, 3.0 and 3.1 mL/s. Which report preserves the measured variation?
- Only the largest result existed.
- Rates ranged from 2.9 to 3.1 mL/s.
- No variation occurred.
- Every rate was exactly 10 mL/s.
See the answer & why
Rates ranged from 2.9 to 3.1 mL/s.
The range includes all three stated results.
A little hint: Compare trials that isolate the named factor, and define rate as the measured change per unit time.
A teaching tip
Compare trials that isolate the named factor, and define rate as the measured change per unit time.