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Pop Quiz: Chemistry Stats

Quiz Updated May 26, 2017

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Score 0/25 Timer 08:00
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Question Answer Wrong Answers
Argon, radon and helium are all ____. noble gases
90.9%
lanthanoids
0.9%
alkali metals
1.4%
group 3 elements
1.6%
Which of the following name/symbol combinations of elements is WRONG? iron/I
86.7%
helium/He
1%
uranium/U
1.8%
antimony/Sb
5%
Which of the following has a positive charge? proton
86.7%
anion
2%
electron
4.8%
neutron
1%
Which polymers occur naturally? starch and cellulose
83.2%
starch and nylon
3.3%
protein and nylon
5.6%
protein and plastic
2.4%
Which one of these contains the most atoms? 1 mol of CH3COCH3
79.3%
1 mol of CO2
3.1%
1 mol of NH3
6.6%
1 mol of H2O
5.7%
A neutron has approximately the same mass as ____. a proton
74.6%
an alpha particle
5.6%
a beta particle
4.6%
an electron
9.7%
Which element listed has the largest atomic radius? Rb
68.1%
Li
7.8%
Ne
10.7%
Na
7.9%
The limiting reagent in a chemical reaction is one that ___. is consumed completely
63.6%
has the smallest coefficient
15.1%
has the smallest molar mass
9.6%
is in excess
6%
Which element can be found in nature in a free (uncombined) state? Au
63.3%
Ca
15.6%
Ba
5%
Al
10.7%
The products of the fermentation of sugar are ethanol and ____. carbon dioxide
60.7%
water
18.8%
oxygen
8.7%
sulfur dioxide
6.6%
What Kelvin temperature is equal to 25°C? 298 K
59.1%
248 K
13.9%
200 K
6.9%
100 K
14.5%
What is the name of the compound with molecular formula C6H6? benzene
56.7%
butane
26.9%
butene
6.7%
butyne
4.2%
Which metal is obtained commercially by the electrolysis of a salt? K
56.6%
Zn
19.1%
Fe
10.7%
Ag
8%
What is the mass number of an atom which contains 28 protons, 28 electrons and 34 neutrons? 62
55.9%
56
17.1%
28
14.3%
90
7.5%
For a gas, which pair of variables are inversely proportional to each other (all other conditions remaining constant)? P, V
54.7%
P, T
17.3%
n, V
11.5%
n, P
10.9%
Which molecule has a linear arrangement of all component atoms? CO2
50.4%
CH4
17.9%
H2O
17.4%
NH3
8.9%
The temperature levels in a nuclear reactor are maintained primarily by ____. coolants
50.3%
shielding
4.2%
moderators
7.9%
control rods
32.1%
Which halogens are gases at room temperature? Cl and F
44.9%
F and Br
5.9%
Cl and Br
9.4%
He and Br
34.3%
Arrhenius defined an acid as ____. a source of H+ ions in water
44.8%
a proton acceptor
11.7%
a source of OH- ions in water
13.6%
a proton donor
24.3%
Which of the following is classified as a metal? V
41.9%
As
18.9%
Ge
21%
At
12.8%
What alkaline earth metal is located in period 3? Mg
37.5%
Na
16.4%
Li
18.1%
Ca
22.6%
Follow this series: Sc, Ti, V... Cr, Mn
35.1%
Cr, Fe
17.9%
Mn, Cr
23%
Mn, Fe
18.3%
When a catalyst is added to a system at equilibrium, the system will ____. stay at equilibrium
32.2%
move quickly to make more products
39.6%
move quickly to make more reactants
18.8%
slow down
3.8%
Which of these names for elements was not approved by the IUPAC (the International Union for Pure and Applied Chemistry) in 2016? Livermorium
31.5%
Moscovium
17.5%
Tennessine
25.6%
Oganesson
19.7%
Which of these elements are found on Earth in large naturally-occurring amounts rather than in man-made forms? gadolinium
30.2%
rutherfordium
24%
promethium
23.8%
technetium
16.1%

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