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Pop Quiz: Chemistry Stats

 Plays Quiz Updated May 26, 2017

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6 Plays Today
Question Answer Wrong Answers
Argon, radon and helium are all ____. noble gases
88.2%
lanthanoids
1.3%
alkali metals
2%
group 3 elements
2.1%
Which of the following has a positive charge? proton
85.3%
anion
2.3%
electron
4.5%
neutron
1.4%
Which of the following name/symbol combinations of elements is WRONG? iron/I
83.9%
helium/He
1.3%
uranium/U
2.4%
antimony/Sb
5.7%
Which polymers occur naturally? starch and cellulose
79.1%
starch and nylon
4.2%
protein and nylon
6.6%
protein and plastic
3.4%
Which one of these contains the most atoms? 1 mol of CH3COCH3
78.5%
1 mol of CO2
3.4%
1 mol of NH3
6.1%
1 mol of H2O
5.5%
A neutron has approximately the same mass as ____. a proton
73.3%
an alpha particle
5.9%
a beta particle
4.7%
an electron
9.3%
Which element listed has the largest atomic radius? Rb
67.4%
Li
8.1%
Ne
9.9%
Na
7.9%
Which element can be found in nature in a free (uncombined) state? Au
61.3%
Ca
15.2%
Ba
5.7%
Al
11.2%
The limiting reagent in a chemical reaction is one that ___. is consumed completely
60.7%
has the smallest coefficient
14.7%
has the smallest molar mass
10.7%
is in excess
7%
What Kelvin temperature is equal to 25°C? 298 K
60.3%
248 K
13.5%
200 K
6.8%
100 K
12.7%
The products of the fermentation of sugar are ethanol and ____. carbon dioxide
59.1%
water
18.4%
oxygen
8.6%
sulfur dioxide
7.5%
What is the mass number of an atom which contains 28 protons, 28 electrons and 34 neutrons? 62
58%
56
15.8%
28
12.6%
90
7.1%
What is the name of the compound with molecular formula C6H6? benzene
57.7%
butane
24.2%
butene
6.9%
butyne
4.6%
Which metal is obtained commercially by the electrolysis of a salt? K
54.7%
Zn
18.6%
Fe
11.2%
Ag
8.7%
For a gas, which pair of variables are inversely proportional to each other (all other conditions remaining constant)? P, V
54.1%
P, T
17.2%
n, V
11%
n, P
10.7%
The temperature levels in a nuclear reactor are maintained primarily by ____. coolants
53.2%
shielding
5.9%
moderators
11.7%
heaters
22.3%
Which molecule has a linear arrangement of all component atoms? CO2
51.3%
CH4
16.7%
H2O
16.9%
NH3
8.3%
Arrhenius defined an acid as ____. a source of H+ ions in water
46.3%
a proton acceptor
11.3%
a source of OH- ions in water
12.7%
a proton donor
22.8%
Which halogens are gases at room temperature? Cl and F
46.1%
F and Br
6.3%
Cl and Br
10.7%
He and Br
30.3%
Which of the following is classified as a metal? V
44.8%
As
16.6%
Ge
20.6%
At
11.5%
Follow this series: Sc, Ti, V... Cr, Mn
38.8%
Cr, Fe
16.7%
Mn, Cr
20.5%
Mn, Fe
17.1%
What alkaline earth metal is located in period 3? Mg
38.1%
Na
16.7%
Li
16.2%
Ca
22.4%
Which of these names for elements was not approved by the IUPAC (the International Union for Pure and Applied Chemistry) in 2016? Livermorium
33.4%
Moscovium
17.9%
Tennessine
22.6%
Oganesson
19.1%
When a catalyst is added to a system at equilibrium, the system will ____. stay at equilibrium
33.3%
move quickly to make more products
38.7%
move quickly to make more reactants
17.2%
slow down
4.1%
Which of these elements are found on Earth in large naturally-occurring amounts rather than in man-made forms? gadolinium
31.4%
rutherfordium
22.2%
promethium
22.2%
technetium
17.3%

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