ALPHABETICAL QUESTIONS ON CHEMICAL ELEMENTS


The questions below have two things in common: All are about chemical elements and all start with the letter given to the left of the question. (Sorry, on "J", "K", "Q" and "W" there are none.) You get one point for every element you know. There is no need to know all of them in order to reach a good result - some of the questions are rather tough.

All set? Good luck!

A: atomic number 33 - atomic symbol As - grey, brittle semimetallic element - its trioxide is a very well known poison - as GaAs used as semiconductor
B: boiling at 58 degrees C - melting at -7.3 degrees C - one of the halogens - atomic number 35 - used in photographic compounds and in gas and oil production - the word's (greek) original meaning is "stench" - atomic symbol Br
C: melting at 28.5 degrees C - atomic number 55 - rare, silvery, very soft alkali metal - atomic symbol Cs - used in photoelectric cells and atomic chronographs
D: silvery metallic element - in the lanthanide series - atomic number 66 - used together with lead as radiation protector - atomic symbol Dy
E: atomic symbol Er - bright silvery, soft metal - used in glass production to give it a rose tinge - atomic number 68 - specific gravity 9.062
F: greenish-yellow gas - one of the halogens - atomic symbol F - boiling at -188 degrees C - atomic number 9 - found in cryolite och apatite - used in the production of Freon, Teflon
G: atomic number 79 - melting at 1064 degrees C - atomic symbol Au - soft, dense, yellow metal - purity is measured in carat - used in jewelry, coins and dentistry
H: the lightest of the noble gases - not incendible - used as lifting gas in airships and baloons - atomic symbol He - atomic number 2
I: atomic symbol In - atomic number 49 - specific gravity 7.31 - silvery, very soft metal - used as a semicompound
L: atomic number 3 - atomic symbol Li - its salts turn flames red and are used in medicine against mano-depressive illnesses - soluble in alcohol
M: atomic number 12 - silver-white - atomic symbol Mg - found in dolomite, talc, asbestos - earlier used in photographic flashes
N: atomic symbol Ni - silvery white metal - atomic number 28 - melting at 1455 degrees C - occurs in meteors - biggest production in Canada
O: atomic symbol Os - atomic number 76 - specific gravity 22.61 - the heaviest natural metal on earth - found in siserkite - melting at 3050 degrees Celsius
P: specific gravity 21.45 - greyish-white metal - used in jewelry - attacked by the halogens - atomic symbol Pt - main producers are Russia and South Africa
R: atomic symbol Rn - radioactive noble gas - formed by radioactive decay of radium - used in medicine, treating malignant tumors - atomic number 86
S: lat. sulphur - light yellow nonmetallic element - atomic number 16 - melting at 119 degrees C - used to vulcanize rubber - turning a flame blue, when burning
T: very hard, but light metal - atomic number 22 - found in ilmenite - used in aeroplanes, rockets and space capsules
U: radioactive metal - atomic number 92 - found in carnotite - used as fuel in nuclear plants - atomic symbol U
V: silvery-gray metal - atomic number 23 - specific gravity 6.12 - melting at 1910 degrees C - its trioxide is dark green and its pentoxide is orange
X: noble gas - atomic number 54 - boiling at -107.1 degrees C - melting at -111.9 degrees C
Y: soft, silvery metal - atomic symbol Yb - one of the lanthanides - found in gadolinite.
Z: bluish-white metallic element - atomic number 30 - melting at 419.4 degrees C - part of alloys, mainly brass


Bernhard Kauntz, 2000

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last update: 17.11.2000 by webmaster@werbeka.com