Among the high explosives, primary explosives are those that ultrasensitive to heat, shock, or friction and provide the major ingredients found in blasting caps or primers used to detonate other explosives. Each of these molecules share the property of being highly strained structurally. Secondary high explosives are those chemicals that do not have to be contained to explode and are relatively stable and safe to handle. They require an electrical spark, fuse, intense heat, or sharp blow to initiate their explosion.
Secondary explosives are relatively insensitive to heat, shock, or friction and will normally burn rather than detonate if ignited in small quantities in the open air.
Dynamite, TNT, Semtex plastics are some common examples of this type of explosive. Huge Explosion! Funkyyyyyy YouTube. The process for examining evidence at the site of an explosion is very similar to the process followed at the scene of a fire.
Ion Mobility Spectrometer. An Ion-mobility spectrometer IMS is an instrument that detects and separates ions in the gas phase. The technique passes absorbed gases through a tube using a carrier gas to promote flow. The walls of the tube are electrified so that ions with greater charge are more attracted and move slower through the tube. Large ions also move more slowly through the tube.
A detector at the end of the tube recognizes the ions based on their charge and shape. The technique is heavily used by both military and law enforcement purposes; not only detecting explosives but also having use for identification of drugs. Stephanie R. The Chemistry of Explosions. The production of these very low energy stable bonds means that a great deal of energy is released. It should be noted that most explosives contain these same elements. TNT itself is high energy and unstable.
Because these groups are fairly large and in close proximity to each other they cause strain on the structure of the Toluene. Remember that groups of electrons repulse each other. Other compounds under similar conformational strain are also explosive for this same reason. Primary High Explosives Among the high explosives, primary explosives are those that ultrasensitive to heat, shock, or friction and provide the major ingredients found in blasting caps or primers used to detonate other explosives.
Fusion and fission reactions can be used in bombs; the splitting of the nuclei of the fissile elements creates a bomb's core. Fusion Reactions: These reactions require high temperatures and are initiated by fission reactions. Fission Reactions: The fission reaction is a process which involves an atom's nucleus splitting into smaller particles, releasing neutrons and lots of energy. Explosions can be caused by a range of reactions, creating dangerous shock waves which can have a range of serious consequences.
Therefore, understanding why explosions occur can be useful. We promise not to spam you, or share your details with any 3rd parties. First aid in the workplace: what you need to know. Medical Emergency Procedures in the Workplace. What are the Different Types of Explosion? What are the Effects of an Explosion? Registered Company No. Website designed and developed by Cuttlefish.
Search our courses. DeltaNet International. Testimonials Why Choose DeltaNet? Get in Touch. What are the Common Causes of Explosions? Natural Explosions Natural explosions can be fairly common and occur after there is a large influx of energy.
Chemical Explosions Chemical explosions are caused by either decomposition or combination reactions that produce large amounts of extremely hot gas, which expands rapidly and increases pressure. Related Articles. Back to Top. Your Email:. Your Message:.
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