GCSE CCEA Single Award Rates of reaction - (CCEA) Effect of concentration - higher tier The rate of reaction increases when reactant particles successfully collide more frequently.

The greater the frequency of successful collisions between reactant particles, the greater the reaction rate. Temperature, concentration, pressure and the use of catalysts affect reaction rate.

K910: Effect of Concentration and Temperature on Rates – Iodine Clock Note: This demo has two parts, I & II. When ordering, please specify whether you want Part I, Part II, or both at the same time.

Urea concentration and biofilm thickness data were used to construct an inverse model for the estimation of the urea hydrolysis rate.