Iron and sulfur reaction | Johnstone’s triangle | 11–14 years

Develop learners’ thinking in the context of the formation of iron sulfide from elemental iron and sulfur at three different conceptual levels: macroscopic, sub-microscopic and symbolic.

This resource is made up of a single-page Johnstone’s triangle worksheet, which helps learners to think about the properties of iron, sulfur and iron sulfide and the diagrams and symbols we use to represent them.