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Pop Quiz: Chemistry Stats

Quiz Updated May 26, 2017

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Question Answer Wrong Answers
Argon, radon and helium are all ____. noble gases
89.9%
lanthanoids
1%
alkali metals
1.6%
group 3 elements
1.8%
Which of the following has a positive charge? proton
86.1%
anion
2.1%
electron
4.6%
neutron
1.1%
Which of the following name/symbol combinations of elements is WRONG? iron/I
85.8%
helium/He
1.1%
uranium/U
2%
antimony/Sb
5.2%
Which polymers occur naturally? starch and cellulose
82.2%
starch and nylon
3.4%
protein and nylon
5.8%
protein and plastic
2.6%
Which one of these contains the most atoms? 1 mol of CH3COCH3
78.8%
1 mol of CO2
3.3%
1 mol of NH3
6.5%
1 mol of H2O
5.6%
A neutron has approximately the same mass as ____. a proton
74.2%
an alpha particle
5.8%
a beta particle
4.6%
an electron
9.4%
Which element listed has the largest atomic radius? Rb
67.9%
Li
7.8%
Ne
10.4%
Na
7.9%
Which element can be found in nature in a free (uncombined) state? Au
62.9%
Ca
15.4%
Ba
5.2%
Al
10.7%
The limiting reagent in a chemical reaction is one that ___. is consumed completely
62.8%
has the smallest coefficient
14.9%
has the smallest molar mass
9.8%
is in excess
6.1%
The products of the fermentation of sugar are ethanol and ____. carbon dioxide
60%
water
18.5%
oxygen
8.8%
sulfur dioxide
6.9%
What Kelvin temperature is equal to 25°C? 298 K
59.2%
248 K
13.8%
200 K
6.9%
100 K
14%
What is the name of the compound with molecular formula C6H6? benzene
56.9%
butane
26%
butene
6.7%
butyne
4.2%
What is the mass number of an atom which contains 28 protons, 28 electrons and 34 neutrons? 62
56.3%
56
16.6%
28
13.9%
90
7.4%
Which metal is obtained commercially by the electrolysis of a salt? K
55.9%
Zn
19%
Fe
10.8%
Ag
8.1%
For a gas, which pair of variables are inversely proportional to each other (all other conditions remaining constant)? P, V
54.3%
P, T
17.3%
n, V
11.3%
n, P
10.8%
Which molecule has a linear arrangement of all component atoms? CO2
50.2%
CH4
17.5%
H2O
17.3%
NH3
9%
The temperature levels in a nuclear reactor are maintained primarily by ____. coolants
50%
shielding
4.4%
moderators
8.4%
control rods
31.1%
Arrhenius defined an acid as ____. a source of H+ ions in water
45.2%
a proton acceptor
11.6%
a source of OH- ions in water
13.2%
a proton donor
23.7%
Which halogens are gases at room temperature? Cl and F
45.1%
F and Br
6.1%
Cl and Br
9.8%
He and Br
33.2%
Which of the following is classified as a metal? V
42.7%
As
18.1%
Ge
20.9%
At
12.5%
What alkaline earth metal is located in period 3? Mg
37.4%
Na
16.4%
Li
17.6%
Ca
22.5%
Follow this series: Sc, Ti, V... Cr, Mn
36.4%
Cr, Fe
17.4%
Mn, Cr
22.2%
Mn, Fe
18%
Which of these names for elements was not approved by the IUPAC (the International Union for Pure and Applied Chemistry) in 2016? Livermorium
32.2%
Moscovium
17.5%
Tennessine
24.7%
Oganesson
19.2%
When a catalyst is added to a system at equilibrium, the system will ____. stay at equilibrium
31.9%
move quickly to make more products
39.9%
move quickly to make more reactants
18.2%
slow down
3.9%
Which of these elements are found on Earth in large naturally-occurring amounts rather than in man-made forms? gadolinium
30.7%
rutherfordium
23.4%
promethium
23%
technetium
16.5%

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