Fuel cells, like the hydrogen-oxygen fuel cells that are looking so promising, use the same idea except instead of being sealed, they accept a continuous flow of the two chemicals from storage tanks: This allows
The party was based on the ability of sodium to separate hydrogen from water, an ability shared by all the elements in the alkali metals group (the left-most column of the periodic table). If you drop sodium into water, it tears the water apart, releasing hydrogen gas into the air. The...
Hydrogenis the first element on the periodic table, with 1 proton per atom. It's the mostabundant element in the universe. If you look at the Sun, you're mostly looking at hydrogen. Its usual ionization color is sort of a purplish-blue. On Earth, it's a transparent gas, which isn'...
To illustrate this point, we discuss the ten elements in the first row of the periodic table, from hydrogen to neon, showing how their binding properties (valences) depend on the energies and shapes of their wave functions. The images invoked depend on viewing the wave functions as charge ...
Left-step Periodic Table, PDF for viewing/printing (1 page) This left-step table is a slightly modified version of the left-step table byCharles Janet(1928). This compact version places hydrogen, helium, lithium, and beryllium all in a single row. ...
On my Noble Rack page I have all the pictures collected, along with pictures of arcs I made in my other collection of noble gas flasks. This oxygen tube is not installed in the table, because it's so dim you couldn't really see it, and it's said to not last very long. So I ...
The metal is taken to just barely above its melting point, then poured in from close to the water surface, a potentially dangerous operation particularly in the case of aluminum (which can form hydrogen gas that may explode). If the temperature is too high the metal fragments into an almost...
When iron is left outside, the metal reacts with the moisture in the air and gains what we call rust. The iron atoms change into iron oxide. The iron loses some of its valence electrons to the oxygen, which bonds with the iron and the hydrogen in the moisture to form hydrated iron ...
Free Science Fair Pictures X-ray/optical composite image of NGC6543, the Cat's Eye Nebula. The red is hydrogen-alpha; blue, neutral oxygen; green, ionized nitrogen. NASA/ESA 15 of 74 Albert Einstein - Free Science Fair Pictures Free Science Fair Pictures Photograph of Albert Einstein (...
Black had used burning phosphorus as the final step in oxygen removal. {Burning phosphorus has a very high affinity for oxygen and is efficient at removing it completely.) Black assigned further study of the gases in air to his doctoral student, Daniel Rutherford. (2) Rutherford built on ...