What chemical mixes with water that will give you an extreme explosive reaction?
919726
Sodium and Potassium are correct.  They are extremely reactive with water, forming Hydroxides and releasing Hydrogen gas, which is usually ignited from the exothermic heat of the reaction.\n\n2 Na + 2 H2O -> 2 NaOH + H2\n\n2 K + 2H2O -> 2 KOH + H2
176378
I think its actually called Picric Acid.\n\nIt is explosive.\n\nhttp://en.wikipedia.org/wiki/Picric_Acid
50562
adding water to potassium already causes it to explode.  you are correct - the reaction releases hydrogen and forms an oxide of potassium, and the considerably exothermic nature of the reaction generates enough heat to ignite the hydrogen gas.  so, mixing water and potassium solid typically causes a big-time explosion - just like mixing water and sodium.\n\nas for the powdered magnesium in there - i suspect that the explosion would scatter it, and it might ignite - the ignition temperature for magnesium metal is 450 C - so you'd probably end up with white-hot burning magnesium shrapnel flying everywhere!\n\nso, if you're ever thinking about making a nasty bomb, sounds like a good way to do it.
910767
Water.  Alcohol absorbs heat quickly but doesn't store it well.
30706
test the reactions of different substances in water. like um put in sugar and salt and then say it dissolved. And put in oil and say it freakin stayed seperate or whatever it does
570305
yes! liquid oxygen and liquid hydrogen.  mix them together, light a match and stand back.
806488
NaOH + H2O---> Na+   +   OH-   +H20\n\nThere is no reaction, but sodium hydroxide will ionize in the water. Actually the water will ionize also.
146503
chemical reaction\n-------------------\nBaking soda added to water raises the temperature slightly. Chemical reactions are either endothermic or exothermic. Endothermic means you have to put energy (heat) in to make the reaction go while exothermic means there's energy (heat) left over. Left over heat will raise the temperature. Baking soda and water is exothermic and so the water gets a little warmer. This is because the binding energy of the chemical bonds of the products has an excess over the binding energy of the components. Therefore, energy is released and the water warms up.\n\nEndothermic reactions do not usually go off at room temperature without heating. Baking soda is NaHCO3 and water is H2O. Added together you get NaOH and H2CO3 which are sodium hydroxide and carbonic acid. Carbonic acid is the fizz in soda. Eventually the mixture releases CO2 gas when the H2CO3 breaks down into H2O and CO2. The solution of H2O and CO2, if left alone uncorked, will lose its fizz. The water CO2 mixture will cool off slightly when the fizz (CO2) is released because the CO2 takes some energy with it. As the water evaporates it cools off because the warm molecules of water evaporate first! That's right! The warm ones!\n\nWhen we say temperature we really mean the average temperature of the molecules in a glass of water. Some are colder than average, some are warmer and many are close to the average. Evaporation requires energy, called the latent heat of vaporization. This heat comes from the warm water molecules. When the water evaporates it cools the glass off. That's why sweating makes you cool off too.\n\nA reaction that is endothermic will take place at a much slower rate because there are always some warmer molecules in the mixture. When we warm up the chemicals we raise the average temperature and a lot of the molecules can then react. When you mix bread dough the mix usually gets noticeably warmer after you put in all the ingredients. This is probably safe to try out at home with some adult help. Just ask your folks to help you whip up a batch of "soda bread." You can eat the result!
1051137
yes the chemical reaction of extreme pissed off ness
544737
Sodium in it's metallic form is extremely reactive with water.  Setting out some sodium can cause spontaneous combustion if the humidity is high or its sits long enough in moderate humidity.  Pure sodium is extremely reactive.  Sodium salts (like table salt) are much less reactive than pure sodium.  Their reactivities are dependant on the anion... (carbonates, Chlorine, nitrates...)
227408
stick of dynamite.\n\nOk, I was just being silly, the other two ideas are good.\nA third way might be to create a whirlpool in the water.  I guess you could consider that a hole as well.
997096
Without consulting any reaction energy tables, my money's on HNO3.  Nitric acid is one of about a half dozen really strong acids and will give off a tremendous amount of heat when dissolved in water.  I don't think any of these will actually react with water, but nitric acid will certainly dissolve the most violently.  If you have access to reference tables, you'll want to look up reaction enthalpies, or dissolution enthalpies.  \n\nOf the compounds you listed, Ammonia (NH3) is a weak base that will not do anything special when added to water, Nitric Acid (HNO3) is a very strong mineral acid that dissolves exothermically, Sodium Sulfide (Na2S) is an ionic salt that should dissolve without any fireworks, and Hydrogen Cyanide (HCN) is a somewhat weaker acid that I would expect to give off less heat than HNO3 when dissolved in water.
975894
Adding water to sodium metallic particles - watch them sizzle but be careful!!!
898045
If you mean an aqueous solution of AN, then all it's gonna do it splatter, not explode.\n\nIf you mean you are trying to boil AN, not an aqueous solution, then you are correct, that is insane.\n\nUsually AN will decompose into nitrous oxide when heated.
925364
Definitely not water, as those three metals will burn on contact with water (and potassium will explode.) Liquid CO2 might do, as it would cool the burning material extensively, possibly below the ignition point. The sand (SiO2) would be a smothering agent. I'm not sure about the carbon tet.\n\n5 NOV 06, 1522 hrs, GMT.
746653
I'm not entirely sure that that would actually explode.\n\nYou mixed salt water, salt substitute-water, alcohol, carbon and then the potassium p and ammon chlor.\n\nThe chloride and potassium may undergo a replacement reaction, but I doubt it would explode unless you actually lit it with a flame. You made great sidewalk salt though, go melt some ice :)
466768
Any grease fires. And you shouldnt rush to putting out a chemical fire with water unless you know what it is.