EXERCISE 3 - Symbols and Properties of the Elements

Click on the correct answer
1 Compounds of this group IIIA (or 13) element are important in cleaners (also what one termite might say to another).
Br
Bi
B
Ba
Be
2 A heavy alkaline earth element. Despite the toxicity of its salts, on oe the salts (sulfate is used in the "milk shakes' taken by a patient for a gastrointestinal series of X-rays (also what happens to patients when the doctor fails).
Br
Bi
B
Ba
Be
3 The heaviest nonradioactive element.
Br
Bi
B
Ba
Be
4 This halogen is the only liquid non-metal.
Br
Bi
B
Ba
Be
5 Compounds of the first member of the alkaline earth metals are extremely toxic.
Br
Bi
B
Ba
Be
6 A metalloid used extensively in semiconductor material whose name should a little like a flower.
Ge
Hg
He
H
Ir
7 The only liquid metal. Used for thermometers and to make amalgams for items such as tooth fillins (also a Greek streaker who wore shoes with wings).
Ge
Hg
He
H
Ir
8 The diatomic form of this element is the lightest gas. By far the most common element in the sun and universe.
Ge
Hg
He
H
Ir
9 An inert gas used in balloons (also what a doctor tries to do to patients).
Ge
Hg
He
H
Ir
10 A narrow layer of the earth has a much higher concentration of this transition metal than other layers. As meteors have a much higher concentration of this element than the earth's crust does, Nobel prize winner concluded that a meteor impact caused the abnormally high level of the element as well as a massive extinction 65 million years ago.
Ge
Hg
He
H
Ir
11 Transition metal used in many alloys such as brass and to galvanize steel 9also where you pour your stale milk).
Na
Ni
Ne
N
Zn
12 Alkali metal whose ion is blamed for high blood pressure.
Na
Ni
Ne
N
Zn
13 Inert gas used in colored display lights.
Na
Ni
Ne
N
Zn
14 Transition metal whose ion has a green color.
Na
Ni
Ne
N
Zn
15 Symbol for element whose diatomic form is a non-metal which is 78% of the air (also what one trogen says to another on the way to bed).
Na
Ni
Ne
N
Zn
16 The first and most abundant rare earth in the Lanthanide series.
C
Ce
Ca
Co
Cu
17 Compounds of this alkaline earth metal make up limestone,chalk, teeth and bones.
C
Ce
Ca
Co
Cu
18 This transition metal is used for electrical wiring and its ion is usually blue.
C
Ce
Ca
Co
Cu
19 This is the transition metal present in Vitamin B12 and its ion is red in aqueous solution (also what happens to men as they grow old).
C
Ce
Ca
Co
Cu
20 Orgainc chemistry is the chemistry of compounds of this elementl. It occurs as diamond and graphite and a third form has been made that is called buckyballs.
C
Ce
Ca
Co
Cu
21 This inert gas is also the name for Superman's home planet.
I
K
Kr
Mg
Mn
22 Compounds of this alkali metal are sometimes used by people on low sodium diets.
I
K
Kr
Mg
Mn
23 This transition metal is used in many important alloys including steel.
I
K
Kr
Mg
Mn
24 This alkaline earth metal is used in fireworks and flash bulbs and is present in chlorophyll.
I
K
Kr
Mg
Mn
25 This non-metal is used in the vulcanization of natural rubber and as a fungicide.
Si
S
Se
Sn
Ra
26 The second most abundant element in the earth's crust is used in semidconductors (also a joker in jail)
Si
S
Se
Sn
Ra
27 This alkaline earth metal is radioactive and has been used on watch and clock hands (also what police do to wild parties).
Si
S
Se
Sn
Ra
28 This element is similar to sulfur and is used in photocells and semiconductors. Humans need a small amount but it can be a dangerous environmental contaminant.
Si
S
Se
Sn
Ra
29 TThis nonmetal is used in the vulcanization of natural rubber and as a fungicide.
Si
S
Se
Sn
Ra
30 This member of the carbon family has predominantly metallic propeties and is used to coat steel in cans for preserving food.
Si
S
Se
Sn
Ra
31 This transuranium element is used in nucler weapons and reactors and is reportedly extremely toxic.
P
Pt
Pb
Pu
U
32 This silvery white, rare transition metal is used in jewelry and for electrical contacts (also what you might like to do to a big meanie).
P
Pt
Pb
Pu
U
33 This non-metal is used in the manufacture of match heads, pesticides and detergent additivesl.
P
Pt
Pb
Pu
U
34 This radioactive element is used in nuclear reactors and weapons.
P
Pt
Pb
Pu
U
35 This metal is used in the manufacture of storage batteries, gasoline, and X-ray shields.
P
Pt
Pb
Pu
U
36 This member of Group IIIA (or 13) is used extensively in foil, kitchen utensils and wiring.
Ar
Al
Au
Ag
As
37 This inert gas is the third most abundant gas in the atmosphere. (It is also represented by the chemical pun abcdefghijklmnopqstuvwxyz.)
Ar
Al
Au
Ag
As
38 This member of the nitrogen family is used in the manufacture of pesticides.
Ar
Al
Au
Ag
As
39 This transition metal has often been used as the base for monetary systems and is used in jewelry.
Ar
Al
Au
Ag
As
40 This brilliant white metal is an excellent eltrical conductor and is used in jewelry aned tooth filings.
Ar
Al
Au
Ag
As
41 Compounds of this member of the alkali metals are used to treat some types of mental disorders.
O
W
Ti
Li
Sb
42 The diatomic form of this non-metal is the second most abundant element in the atmosphere and it is the most abundant element in the earth's crust.
O
W
Ti
Li
Sb
43 TThis transition metal is used for light bulb filaments.
O
W
Ti
Li
Sb
44 This metalloid member of the nitrogen family is used extensively in semiconductor technology.
O
W
Ti
Li
Sb
45 This transition metal is as strong as steel but 45% less dense. Its oxide is used in paint.
O
W
Ti
Li
Sb
46 Compounds of this halogen are used as additives in toothpastes (also the opposite of roofing).
F
Fe
Cl
Cr
Cd
47 This relative of mercury is used in solder and batteries but the translation from Japanese of the disease that results from poisioning by this element is "ouch, ouch".
F
Fe
Cl
Cr
Cd
48 This halogen is used in bleach and pools.
F
Fe
Cl
Cr
Cd
49 This transition metal is used as a coating on water taps and car bumpers because of its luster.
F
Fe
Cl
Cr
Cd
50 This transition metal is the main element in steel (also a really pressing thing).
F
Fe
Cl
Cr
Cd
51 The remaining questions are facillitated by the use of an excellent periodic table site on the internet called WebElements. To reach this site, click on:
http://www.webelements.com/
Titanium is almost as strong as steel but its density is about half as much as for steel. In addition, unlike most metals the properties of titanium do not change much with changing temperature. Unfortunately the high cost of refining titanium limits its use to special applications. What is the density of titanium? (Hint: click on the element in the periodic table and then click on density under elemental properties on the left side of the screen.)
4507 g/cm3
4.507 g/cm3
10.64 g/cm3
1.00 g/cm3
None of the previous answers.
52 What are the Celsius melting and boiling points of mercury to 4 significant figures? (Hint: click on the element in the periodic table and then click on melting points under elemental properties on the left side of the screen.)
234.3C, 629.9C
0.0C, 100.0C
507.4C, 903.0C
The values were not available at WebElements.
None of the previous answers.
53 In what year was element 114 discovered? (Hint: click on element 114 and then click on history under background on the left side of the screen.)
1998
1990
1776
It hasn't been discovered yet.
None of the previous answers.
54 Which of the following is not listed as one of the uses of platinum? (Hint: click on platinum and then click on uses under background on the left side of the screen.)
jewelry
cis-platin, [PtCl2(NH3)2], is an effective drug for certain types of cancer
dentistry
electrical contacts
None of the previous answers
55 What is the percentage of heavy hydrogen (deuterium) that occurs on earth? (Hint: click on hydrogen and then click on Naturally occurring isotopes under Nuclear properties on the left side of the screen.)
0.0115%
0.00%
100%
1.15%
None of the previous answers.
56 Evidence for a meteor impact with the earth 65 million years ago was provided by the late Nobel Prize winning physicist, Dr. Walter Alvarez when he found that a very narrow layer of the earth's crust contains a high concentration of iridium. It is believed that the impact caused massive extinctions of life possibly including the dinosaurs. What are the concentrations of iridium in the earth's crustal rocks and in meteors (in ppb by weight)? (Hint: click on iridium and then click on Geology under iridium around us on the left side of the screen.)
2,2
0,0
0.1, 1
0.4, 550
None of the previous answers.
57 Which statement is true about the toxicity of plutonium? (Hint: click on plutonium and then click on Biology under platinum around us on the left side of the screen.)
no known toxicity
extreme radiological poison
slightly toxic from prolonged exposure
toxic only when swallowed but not from breathing
None of the previous answers.