Which of the following is not a chemical element?

copper
iron
brass
chromium
Copper, iron and chromium are chemical el­e­ments. Brass is a metal alloy made of copper and zinc.

Answers distribution

copper
iron
brass
chromium
answers
flagFinland
0%
0%
100%
0%
40
flagGreece
0%
0%
95%
4%
22
flagNorway
5%
0%
94%
0%
17
flagthe United Arab Emirates
3%
3%
93%
0%
30
flagSingapore
8%
0%
91%
0%
12
flagthe Philippines
5%
5%
90%
0%
20
flagFrance
0%
5%
88%
5%
18
flagPoland
2%
3%
87%
5%
9265
flagItaly
0%
3%
87%
9%
33
flagthe United States
1%
3%
86%
7%
296
flagUnknown
2%
3%
85%
7%
912
flagMalaysia
0%
0%
84%
7%
13
flagPakistan
4%
8%
82%
4%
23
flagthe United Kingdom
6%
4%
81%
8%
334
flagAustralia
0%
0%
80%
20%
20
flagIndia
1%
5%
78%
10%
143
flagthe Netherlands
0%
5%
76%
15%
39
flagGermany
6%
8%
75%
8%
104
flagCanada
4%
12%
75%
8%
24
flagRepublic of Ireland
14%
3%
70%
11%
27

Gender

men88%
women92%
copper
2%
1%
iron
3%
2%
brass
88%
92%
chromium
5%
2%

Language versions

question
answers
results
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Which of the following is not a chemical element?
758
79%

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Illustration: Matti Mattila
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