KS3 Chemistry Fire Triangle Worksheet Worksheets (pdf) aimed at KS3 or KS2 Science / Chemistry students studying AQA, Edexcel and other exam boards Chemical Reactions topic. The pack contains a detailed, labelled diagram of the fire triangle and a set of follow up questions. Some short answer questions followed by an extended answer question to assess literacy. Students can use the information sheet to add detail to the label boxes - with an answer sheet for the teacher to make use of. This resource can be used independently where students research each part of the fire triangle or alongside a teacher-led lesson, it can also be used for revision.