A catalyst increases the rate of a reaction but it is not used up in the reaction. If a catalyst is present, the reacting particles can collide more successfully with less energy and so the ...

that's our catalyst. JON CHASE:'And finally - the size of particles. 'How does that affect the rate of reaction?' JON CHASE:Let's burn this lump of sugar. JON CHASE:Well it burns a bit.

Hydrogen-based technologies are becoming more of a topic as renewable and clean energy sources are desired. A controversial ...