docx, 128.48 KB
docx, 128.48 KB
docx, 26.07 KB
docx, 26.07 KB
Students compare the chemical properties of the two explosives HMX and nitrogen triiodide. There is a focus on kinetic versus thermodynamic stability, although teachers can choose to avoid using these terms if specifications don't demand it. At any rate, from the descriptions of the explosives, students should be able to infer that nitrogen triiodide has a significantly lower activation energy, rendering it lethally impractical as a military explosive (except maybe for booby traps). The final question directs students to consider links with the syllabus of which there are many to both AS and A2. The teacher's notes contain brief answers as well as links to further reading. Please leave a comment if you use it, constructive criticism is welcome. (Note, images are creative commons from Wikipedia for which acknowledgement is not required.)
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