Collision frequency

These diagnostic questions and response activities (contained in the zip file) support students in being able to:

• Predict that two substances in the gas state will react without mechanical mixing.
• Recognise that a successful collision between molecules is a collision where a new product molecule (or molecules) is formed.
• Use this idea of collision frequency to explain how pressure affects rate of reaction.
• Predict that two substances in solution will react without mechanical mixing.
• Use the idea of collision frequency to explain how surface area and concentration affect rate of reaction.

The resources include details of common misconceptions and a summary of the research upon which the resources are based.

Download the zip file for all the questions and activities.

More resources like this can be found on the BEST webpage:  Best Evidence in Science Teaching