What is the common characteristic of the chemical substances generally known as CL-20, HMX and LLM-105, which are sometimes talked about in media?

This source explicitly lists 'industrial explosives including matchboxes, gun powder, etc.' as a regulated/recognized product category in industrial policy, showing explosives are a discrete chemical category in official documents.

A student could use this pattern to look up official industrial/defence or hazardous‑chemicals lists (policy documents, customs/industrial classifications) to see if CL‑20, HMX, LLM‑105 are catalogued as explosives.

This snippet notes that investigative/legal agencies have jurisdiction over 'explosive substances' and 'manufacture or sale of prohibited arms', implying there are legal lists/classifications of explosive materials tied to security enforcement.

One could extend this by checking NIA/other government seizure/prohibited‑arms lists or legal schedules for the specific compound names to infer military/legal classification.

Defines combustible substances and discusses combustion tests/behaviour, giving a basic physical-chemical property (combustion/oxidation) relevant to distinguishing energetic materials from ordinary chemicals.

A student could apply this by checking whether CL‑20/HMX/LLM‑105 have documented energetic properties (e.g., rapid exothermic decomposition, detonation/combustion characteristics) in chemical datasheets.

Describes chemical‑based industries using various chemical raw materials, indicating that industry references/catalogues exist for classes of chemicals (including specialised ones).

Use industry/chemical‑industry catalogs or material safety data sheets to see whether these compounds are produced/handled as explosives for military or industrial uses.

Lists industrial wastes including 'organic substances' and other hazardous chemicals, hinting that many industrial organics (some being energetic) are tracked in environmental/industrial contexts.

A student might check environmental regulation lists or hazardous‑waste classifications to find if these specific organic energetic compounds are regulated as explosive/hazardous wastes.

Lists 'industrial explosives' separately among hazardous manufactured products, implying a recognized category of high-energy chemical materials distinct from ordinary fuels.

A student could check whether CL-20, HMX, LLM-105 are catalogued as 'industrial explosives' or 'energetic materials' (rather than propellant or fuel) to judge if they match that category.

Gives the basic definition of a combustible substance ('fuel') as one element of the fire triangle, establishing what qualifies as a fuel in a combustion context.

Use this rule to ask whether the substances in question function as continuous combustion fuels (for engines/propulsion) versus short-duration energetic charges (explosives/warheads).

Describes natural gas and other conventional fuels used for propulsion and energy generation, showing the typical kinds of fuels used in engines and transport.

Compare the typical physical/chemical forms of cruise-missile propulsion fuels (e.g., hydrocarbons, jet fuels) with the chemical nature of CL-20/HMX/LLM-105 to assess plausibility that they serve as missile fuels.

Explains that 'fuel' often means a substance used in controlled energy conversion (e.g., fuel cells using hydrogen), distinguishing fuels used for power/propulsion from other high-energy substances.

A student could use this distinction to determine whether the named chemicals are used for steady energy conversion (propulsion) or instead for rapid energy release (explosive use).

Gives a concise definition of 'fuel' as a combustible substance that needs oxygen and heat (fire triangle).

A student could use this rule to check whether CL-20/HMX/LLM-105 are typically described as combustible fuels (vs. other energetic classes) by consulting external chemistry/propulsion sources.

Lists common examples of combustible substances (wood, paper, kerosene) used to illustrate fuels and combustion behavior.

A student could compare the chemical nature of CL-20/HMX/LLM-105 to these examples (e.g., are they hydrocarbon-like fuels such as kerosene?) to judge likelihood of use as rocket propellants.

Notes that most fuels used are carbon or its compounds, linking 'fuel' concept to certain chemical composition.

A student could check whether CL-20/HMX/LLM-105 are predominantly hydrocarbon/carbon-based fuels or belong to a different class (energetic nitro/nitramine compounds).

Contains an itemised mention of 'Industrial explosives' in a list of regulated/hazardous items, providing an example category relevant to energetic chemicals.

A student could use this to suspect CL-20/HMX/LLM-105 might be classified as explosives rather than conventional rocket fuels and then check external references on their primary use.