Surface Area
Part of the Energy, Rates and Equilibrium section of Coddy's Chemistry journey. Lesson 18 of 35.
A solid reacts at its surface. Smaller pieces: more surface, more collisions, faster.
Powder reacts far faster than a lump; fine dust can even explode.
Mass lost as gas escapes, per second, is a rate:
Challenge
A lump of marble in acid loses of carbon dioxide in . What is the average rate of the reaction?
Try it yourself
Solve for
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Energy, Rates and Equilibrium
1Energy in Reactions
Exothermic and EndothermicEnergy DiagramsEnthalpy ChangeActivation EnergyRecap - Hand Warmer4Rates of Reaction
Collision TheoryConcentration and RateTemperature and RateSurface AreaCatalystsRecap - Speed Trials