What kind of material is this cooktop made of?

glass
ceramic
metal
glass-ceramic
Glass-ce­ram­ic ma­te­ri­als share many prop­er­ties with both non-crys­talline glass and crys­talline ce­ram­ic­s. The negative thermal ex­pan­sion of the crys­talline ceramic phase can be balanced with the positive ex­pan­sion of the glassy phase. At a certain point (~70% crys­talline) the glass-ce­ram­ic has a net ex­pan­sion near zero and can sustain repeated and quick tem­per­a­ture changes up to 1000 °C.

Answers distribution

glass
ceramic
metal
glass-ceramic
answers
flagAustralia
6%
18%
0%
75%
61
flagItaly
12%
10%
5%
72%
40
flagMalaysia
10%
14%
3%
71%
28
flagFrance
3%
26%
0%
70%
57
flagDenmark
0%
30%
0%
69%
26
flagthe United Arab Emirates
6%
6%
12%
67%
31
flagthe United Kingdom
6%
22%
2%
66%
722
flagthe Netherlands
10%
24%
0%
65%
86
flagPakistan
4%
12%
16%
64%
48
flagUkraine
16%
16%
3%
64%
31
flagGermany
4%
31%
0%
62%
234
flagNorway
8%
25%
3%
62%
56
flagPoland
8%
26%
2%
61%
18603
flagSingapore
8%
20%
12%
60%
25
flagthe United States
10%
22%
6%
59%
1108
flagIndia
9%
23%
6%
58%
573
flagRepublic of Ireland
9%
29%
2%
58%
82
flagCanada
7%
28%
4%
57%
63
flagthe Philippines
7%
19%
10%
57%
57
flagUnknown
7%
34%
1%
55%
799

Gender

men57%
women64%
glass
9%
7%
ceramic
30%
25%
metal
2%
2%
glass-ceramic
57%
64%

Language versions

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What kind of material is this cooktop made of?
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60%

Details

Author: Bob Stanley
Illustration: Kai Hendry
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