He |
---|
| 1 pt |
| | What is a new spectral line was observed in solar radiation? |
| | First evidence that helium existed |
| 2 pt |
| | What is 4:1 oxygen:helium? |
| | Ratio of helium to oxygen used for diver breathing gas |
| 3 pt |
| | What is "sun" (Greek)? |
| | Meaning of the name helium |
| 4 pt |
| | What is 23%? |
| | Percentage of the universe composed of helium (+/- 5%) |
| 5 pt |
| | What is helium-II (a "superfluid" that flows without viscosity)? |
| | Form of helium only observed when cooled below 2.2K |
|
Ne |
---|
| 1 pt |
| | Who are Ramsay and Travers? (distilled remaining liquid from air after cooling, obtained Ne, Xe, and Kr) |
| | Discoverer of neon |
| 2 pt |
| | What is the atmosphere? (low-temperature distillation of air, also used for Ar, Kr, and Xe) |
| | Major source of neon |
| 3 pt |
| | What is "new" (Greek)? |
| | Origin of the name neon |
| 4 pt |
| | What is the helium-neon (He-Ne) laser? |
| | Common laser using neon as part of it's lasing medium |
| 5 pt |
| | What is 3-15 kV? |
| | Typical voltage used in a neon sign to get the gas to "glow" (+/- 10%) |
|
Ar |
---|
| 1 pt |
| | What is A? |
| | Previous symbol of argon prior to 1957 |
| 2 pt |
| | Who are Rayleigh and Ramsey? (in 1894) |
| | Discoverers of argon |
| 3 pt |
| | What is "inactive" (Greek)? |
| | Meaning of the name argon |
| 4 pt |
| | What is asphyxiant? |
| | Major use of argon in the poultry industry |
| 5 pt |
| | What is HArF? |
| | Metastable argon compound discovered at the University of Hawaii in 2000 |
|
Kr |
---|
| 1 pt |
| | What is blue? (makes people look better, but makes bulb much more expensive) |
| | Color contributed by krypton in fluorescent lamps to improve their overall light output |
| 2 pt |
| | What is 1904? |
| | Year Ramsay was honored with the Nobel prize for discovereing noble gases (+/- 5 yrs) |
| 3 pt |
| | What is the definition of the meter? (equivalent to 1,650,763.73 wavelengths in a vacuum of Kr-86 emission) |
| | Standard associated with krypton-86 from 1960-1983 |
| 4 pt |
| | What is "hidden" (Greek)? |
| | Meaning of the name krypton |
| 5 pt |
| | What is the University of Helsinki (Finland)? |
| | Location of the discovery of the compounds HKrCN and HKrCCH |
|
Xe / Rn |
---|
| 1 pt |
| | What is flash lamps (or arc lamps)? |
| | Major commercial use of xenon |
| 2 pt |
| | What is it's radioactivity? (occurrs naturally from uranium decay, can get trapped in homes and be a hazard) |
| | Major problem associated with radon |
| 3 pt |
| | What is anesthesia (although it's quite expensive)? |
| | Usage of xenon of interest to physicians |
| 4 pt |
| | What is "strange" (Greek)? |
| | Meaning of the name xenon |
| 5 pt |
| | What is XeF_n_ (n=2, 4, or 6)? |
| | First xenon compound observed by Neil Bartlett in 1962 |
|
Daily Double |
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| Daily Topic |
| | Daily Question |
| | Daily Answer |
|