National 5; Rates of reaction Calculating the rate of a reaction. The speed of a chemical reaction is affected by temperature, concentration, particle size and the presence of a catalyst.

The amount of foam produced in a period of time is a way of measuring the rate of the reaction. Project the video Genie in a Bottle. Genie in a Bottle. Lesson 6.5 Video. ... Explain to students that ...

Students saw that the rate of the reaction can be sped up if the reactants are warmed and slowed down if the reactants are cooled. Explain that there are many reactions that will not occur at all at ...

JON CHASE:'Chemical reactions are all about collisions between particles, 'and a rate of reaction depends on how frequently particles collide 'and with how much energy. JON CHASE:'There four ...

The reaction rate is enhanced due to significant reduction in the dynamical coupling of the solvent water with the reaction paths at the interface. Credit: Adam Malin, ORNL, U.S. Dept. of Energy ...

However, to date, the slow rate of the hydrogen oxidation reaction (HOR) in alkaline environments has hindered advances in alkaline fuel cell systems.