Group 3

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