Discussing the classroom resource
How well does the resource convey the dynamic nature of a chemical reaction?
The difficulty here is representing the movement of particles and the formation of new material is not possible. Some students may have difficulty with this as the particles in boxes do not show a chemical change.
How well does the resource convey the idea that particles are in motion?
This is a perenial problem with 2D graphics. Most texts indicate movement of particles by drawing cartoon-like motion lines around the "moving object". However this can be confusing for students especially if we are also trying to show chemical bond formation.
Does the activity allow students to explore the impact of changing condidtions on the rate of reaction?
Whilst the change in concentration, pressure and particle size can be explored it is hard to show the change in temperature through still images as this changes particle movement.
How well does the resource link the prior learning about the factors affecting rate to explanations and observations such as graphical representation of rate?
The activity brings together prior learning and tests it in a way that students might encounter in an examination or class test.
How could you extend this activity to encourage your students see that these scenarios are dynamic and that a chemical reaction is occurring?
You could ask your students to create an 'end of reaction' box for each scenario. In this box, students would draw the particles they would expect to see at the end of the reaction.
So for example in scenario 1, they would draw 5 particles made of a black and white circle joined together. This additional activity could help to portray the dynamic nature of a chemical reaction.