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The lowest man made temperature is 0.000000003 degrees K or -273 degrees C. The lowest possible temperature is 0 degrees K. That is -273.15 degrees C.
The strongest acid in the world is "fluoro-antimonic acid." HFSbF5. it is 1605.8 times more powerful than 5 mol/l sulphuric acid.
The hottest flame in the world at one atmosphere pressure is made by burning Carbon Subnitride. It give a flame of 4988 degrees C. By comparison a methane flame is 1200 degrees C.
The most powerful nerve gas in the world is "Ethyl S-2 diisopropylamino- ethylmethylphosphonothiolate. Also know as VX. Its is 300 times more effective than phosgene.
The most toxic radioactive substance in the world is "Thorium-228." 0.00000000000000022g per meter cubed is enough to kill five people.
The most toxic non-radioactive substance is Beryllium. 0.0000002g per meter cubed is enough to kill a person.
The most toxic man made substance is 2,3,7,8 tetrachlorodibenzo -p- dioxin. 50 parts per 1000000000000000000 wil kill a person
The darkest substance in the world is a Nickel-Phosphorus alloy which reflects 0.16% of light.
The smelliest substance is the world is butyl- seleno - mercaptan. It smells of dead fish, rotting eggs and poo all in one. It is add to odourless gases so they can be smelled.
The highest man made temperature ever is 510000000 degrees C. It was made in a nuclear fusion rector of all places!
Hydrogen and helium can never be made in to a solid at normal atmospheric pressure. Even at 0 degrees K they still remain liquid. A pressure of at least 26 atmospheres at -272 degrees C is needed to make solid helium or hydrogen.
The most powerful reaction possible is when 100g of matter reacts with 100g of anti-matter. The energy equal to that of a Hydrogen Bomb is produced.
