Reaction Rates are affected by a few things. Without telling them the point, the students had a quick demo where they had to dissolve sugar cubes the fastest.
In third period, Taylor K was the quickest and in fourth, Maria and Sam were the fastest. The key was to use warm water (I only have one warm sink and they were def fighting over it or trying to remember which one it is) - or chew them up and spit them out.
The things that speed up reactions are:
- Temperature - warmer is faster
- Surface Area - small pieces have more surface area
- Concentration - the more water, the faster sugar will dissolve
- Catalyst - lowers the activation energy and speeds up the reaction
- Agitation - shaking or stirring increases the frequency of collisions.
|Lucas is using scissors to bust up his sugar cubes and make the pieces smaller. Josh is looking for the warm sink|