http://www.buyartsuppliesonline.org/pyrex-type/
Chemistry Matching HW!!!!?
Match the description with the name and symbol or formula of a Group 3A(13) element or compound. One answer is used twice.
_____
Toxic metal that lies between to other toxic metals
_____
Component of heat-resistant (Pyrex-type) glass
_____
Largest temperature range for liquid state of an element
_____
Manufacture of high-speed compouter chips
_____
Mild antibacterial agent (e.g. for eye infections)
_____
Elementary substance with three-center, two-electron bonds
_____
Metal protected from oxidation by adherent oxide coat
1.
boron oxide, B 2O 3
2.
gallium, Ga
3.
boron, B
4.
aluminium, Al
5.
boric acid, H 3BO 3
6.
thallium, Tl
(It's not 3,1,2,2,5,6,4)
Toxic metal that lies between to other toxic metals?
Thallium.
Component of heat-resistant (Pyrex-type) glass
This is Boron (but could also be aluminium as it contains both)
Largest temperature range for liquid state of an element?
This is Gallium.
Manufacture of high-speed compouter chips?
This is Gallium
Mild antibacterial agent (e.g. for eye infections)?
This is boric acid
Elementary substance with three-center, two-electron bonds?
This is boron oxide.
Metal protected from oxidation by adherent oxide coat?
This is Aluminium
The answer is 6, 3, 2, 2, 5, 1 and 4.
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