Tag: exam

Revision tips – how to ace your exams!

Revision tips – how to ace your exams!

Practical revision tips and strategies to ace your IB, IGCSE and GCSE science exams. Covers planning, active recall, spaced repetition and exam technique.

Esterification: Equilibrium Constant Determination

Esterification: Equilibrium Constant Determination

Carry out an esterification reaction between ethanoic acid and ethanol. Test the equilibrium position at different temperatures. IB chemistry practical with Kc calculations.

The Winkler Method – Biological Oxygen Demand BOD

The Winkler Method – Biological Oxygen Demand BOD

Winkler method: measure dissolved oxygen in water samples and calculate biological oxygen demand (BOD). IB and A-level redox titration practical with full method.

Aspirin Synthesis: Esterification Practical

Aspirin Synthesis: Esterification Practical

Synthesise aspirin (acetylsalicylic acid) through esterification of salicylic acid and acetic anhydride. IB and A-level organic chemistry practical with method.

Empirical Formula of Magnesium Oxide: Classic Practical

Empirical Formula of Magnesium Oxide: Classic Practical

Calculate the empirical formula of magnesium oxide from experimental mass data. Classic IB, IGCSE and GCSE chemistry practical with worked molar ratio calculations.