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2. Water-reactive substances - Wikipedia

   en.wikipedia.org/wiki/Water-reactive_substances

   The alkaline earth metals (Be, Mg, Ca, Sr, Ba, and Ra) are the second most reactive metals in the periodic table, and, like the Group 1 metals, have increasing reactivity with increasing numbers of energy levels. Beryllium (Be) is the only alkaline earth metal that does not react with water or steam, even if the metal is heated red hot. [9]

3. Thermite - Wikipedia

   en.wikipedia.org/wiki/Thermite

   Mixing water with thermite or pouring water onto burning thermite can cause a steam explosion, spraying hot fragments in all directions. [ 60 ] Thermite's main ingredients were also utilized for their individual qualities, specifically reflectivity and heat insulation, in a paint coating or dope for the German zeppelin Hindenburg , possibly ...

4. High resistance connection - Wikipedia

   en.wikipedia.org/wiki/High_resistance_connection

   A high-resistance connection (HRC) is a hazard that results from loose or poor connections in traditional electrical accessories and switchgear which can cause heat to develop, capable of starting a fire. [1] Glowing connections occur when relatively high current exists in a relatively large resistance object. Heat comes from power dissipation ...

5. Thermal burn - Wikipedia

   en.wikipedia.org/wiki/Thermal_burn

   A thermal burn is a type of burn resulting from making contact with heated objects, such as boiling water, steam, hot cooking oil, fire, and hot objects. Scalds are the most common type of thermal burn suffered by children, but for adults thermal burns are most commonly caused by fire. [ 2 ]

6. Oxy-fuel welding and cutting - Wikipedia

   en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

   LPG will damage an incompatible hose, including most acetylene hoses. The threaded connectors on the hoses are handed to avoid accidental mis-connection: the thread on the oxygen hose is right-handed (as normal), while the fuel gas hose has a left-handed thread. [6] The left-handed threads also have an identifying groove cut into their nuts.

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