### device | instrument | weapon | chemical weapon:

Poison gas
* Many poison gases contain chlorine.
  * ' is any gas that is also a poison. Poison gases can kill or injure a person if present in a high enough concentration. There diverse range of different poison gases and each has unique properties. Many toxic liquids are also volatile and their vapors are poison gas.
  * are used in industry as chemical reagents. The chemical reactions they can be used for are more important than their toxicity. Today, chemists try to avoid the use of poisonous gases, but it is often not possible. Examples of large-volume industrial poisonous gases are hydrogen sulfide, cracked from oil, chlorine, in diverse chemical uses and to disinfect drinking water, and ammonia, which valuable fertilizer into itself and can be converted into a range of other fertilizers, in addition to chemical uses
  - chemical weapons
* can damage the lungs, nerves, skin, and eyes, and cause a slow and painful death
* pose their own special problems since nothing obvious has been ingested.
* represent a significant hazard.

### device | instrument | weapon | chemical weapon | poison gas:

Mustard agent
* are very persistent under cold and temperate conditions.
* can also bind to different proteins in the cell
  - cause external and internal blistering, and can be lethal
  - penetrate skin and many materials
* dissolves a red dye and nerve agent a yellow dye
* is highly reactive and it shows little persistence in the body.
* smells like garlic or mustard.

### device | instrument | weapon | chemical weapon | poison gas:

Nerve agent
* All nerve agents are heavier than air
  - belong chemically to the group of organo-phosphorus compounds
* affect the nervous system
  - transmission of nerve impulses in the nervous system
* appear as water or light oiland all are toxic at small concentrations.
* are colorless to light brown liquids, some of which are volatile
  - cumulative poisons
* are more dense than air so they are especially dangerous to people in low areas
  - or less fat-soluble and can penetrate the outer layers of the skin
  - organophosphate ester derivatives of phosphoric acid
  - organophosphorous chemicals of very high toxicity
  - organophosphorus esters
  - poisonous liquids, that easily evaporate
  - poisons that can kill by damaging the nervous system
* attack the central nervous system and are lethal in tiny doses.
* bind to part of the AChE molecule.
* cause people to lose control of muscles and stop breathing.
* enter the body through breathing, by ingestion, or absorption through the skin
  - injection, or absorption through the skin
* have an extremely rapid effect.
* induce the production of watery secretions as well as respiratory distress.
* is an agent
  - lethal in very small quantities
* show few or delayed effects.
+ Poison gas: Weapons :: Chemical warfare
  * Nerve agents are poisonous liquids, that easily evaporate. They shut down biochemical processes that allow muscles to relax. The result is that all muscles contract, including muscles required for breathing, causing death by asphyxiation.
+ Poison, Poison gas: Health
  * In wars, some countries use poison gases against their enemies. Poison gases such as chlorine gas and mustard gas were used in World War I. Corrosive poison gases cause serious burns to the skin, eyes, and lungs. Nerve agents are poisons that can kill by damaging the nervous system.

Tear gas
* are chemical weapons
  - gases
  - located in demonstrations
  - poisonous gases
* is also a lachrymator
  - released in a room full of people
* penetrates more and more strongly into the air.

Deadly weapon
* are in the hands of children.
* means anything designed for lethal use.

Dirk
* are daggers.
* includes hilts
  - sections