Chemical principles
Catalysis: changing the reaction pathway
A reaction can reach the same destination by a pathway with a lower energy barrier.
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Chemical principles
Reaction mechanisms, quantitative relationships and evaluating scientific evidence.
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Chemical principles
Understanding pH and hydrogen-ion activity
A one-unit move on the pH scale represents a tenfold change in hydrogen-ion activity.
Chemical principles
Reading research: measurements, models and evidence
Six questions connect an exciting result to the evidence that supports it.