B |
---|
| 1 pt |
| | What is borax / kernite? |
| | Ore that boron is commonly found as |
| 2 pt |
| | What is nitrogen? (BN = CC) |
| | When paired with this element, boron can create "aromatic" compounds isoelectronic to carbon materials |
| 3 pt |
| | What is borosilicate glass? |
| | Major commercial use of elemental boron |
| 4 pt |
| | Who is Berzelius? |
| | Chemist who identified boron as an element in 1824 |
| 5 pt |
| | What is a source of oxygen in detergents, "color safe" bleaches and tooth whiteners? |
| | Commercial use of sodium perborate |
|
Al |
---|
| 1 pt |
| | What is third? (behind oxygen and silicon) |
| | Ranking of abundance of aluminum of elements in the Earth's crust |
| 2 pt |
| | What is the Bayer process? (electrolysis in cryolite solvent) |
| | Process used to extract aluminum from bauxite ore |
| 3 pt |
| | What is the Hindenburg? (it's flammable!) |
| | Problematic location where aluminum-based paint was used |
| 4 pt |
| | What is it's hardness? (It's one of the hardest materials known to mankind) |
| | Unique physical property of corundum (Al_2_O_3_) |
| 5 pt |
| | What is to induce preciptation in wastewater treatment or water purification? |
| | Use of aluminum ammonium sulfate (a mordant) |
|
Ga |
---|
| 1 pt |
| | What is a semiconductor? |
| | Major use of gallium (usually as GaAs, GaN, or InGaAs) |
| 2 pt |
| | What is 303K (29.7 deg C)? |
| | Melting point of gallium (+/- 10 degrees) |
| 3 pt |
| | What is plugs in sprinkler heads? |
| | Use of a gallium and indium alloy that takes advantage of it's low melting point |
| 4 pt |
| | What is it's solid phase is less dense than it's liquid phase? |
| | Unique physical property gallium shares with water |
| 5 pt |
| | What is PET? (positron emission tomagraphy) |
| | Medical imaging technique that uses gallium-68 as a radioisotope |
|
In |
---|
| 1 pt |
| | What is lead and zinc? |
| | Two elements indium is usually found with in ores |
| 2 pt |
| | What is a "glue" or "paint" that connects different materials together? (e.g., electrode to superconductor material) |
| | Usage of liquid indium in electronics |
| 3 pt |
| | What is one gram? |
| | Total quantity of pure indium that existed on the planet in 1924 before the widespread usage of electrolysis |
| 4 pt |
| | What is aircraft engine bearings? |
| | First widespread use of indium during WWII |
| 5 pt |
| | What is it's optically transparent while being electrically conductive? |
| | Unique property of indium tin oxide (ITO), a conducting material |
|
Tl |
---|
| 1 pt |
| | What is rat or ant poison? (now considered too dangerous) |
| | Common use of thallium before 1975 |
| 2 pt |
| | What is the potassium ion? |
| | Ion of similar size to Tl^+^ that leads to it's extreme toxicity (and makes it a good imaging agent) |
| 3 pt |
| | What is "flue dust" from pyrite roasting (to obtain other metals)? |
| | Major source of thallium |
| 4 pt |
| | What is nausea/vomiting, then loss of hair and fingernails, then coma? |
| | First sign that you've been poisoned by thallium |
| 5 pt |
| | What is used a "white powder" they discovered at a military dump (thallium) as talcum powder substitute and tobacco additive? |
| | Reason 25 Russian soldiers were awarded the Darwin Award in 2004 |
|
Daily Double |
---|
| Daily Topic |
| | What is BF_3_? |
| | Molecule known the "super Lewis acid" composed partly of atoms from this group |
|