Final answer:
Ammonium azide is classified as a dangerously reactive material, similar to ammonium nitrate, which has been used in both agriculture and explosives and can be hazardous under certain conditions.
Step-by-step explanation:
Ammonium azide is a dangerously reactive material. It is not a combustible liquid, a reactive flammable material, nor a compressed gas, but rather, it can be highly unstable and can detonate under certain conditions. This reactivity is similar to the behavior of related nitrogen compounds such as ammonium nitrate, which has been used both in agriculture as a fertilizer and in explosives. Ammonium nitrate was notably involved in large-scale tragedies such as the Texas City explosion in 1947 and the Oklahoma City bombing in 1995. In each case, the substance's ability to detonate made it highly dangerous under the wrong conditions. Furthermore, nitrogen-based compounds like ammonia are commonly used in various applications due to their chemical properties, but they can be hazardous in their concentrated form.