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
7%
13%
0%
78%
52
flagFrance
3%
23%
0%
72%
55
flagItaly
14%
8%
5%
71%
35
flagMalaysia
10%
14%
3%
71%
28
flagDenmark
0%
32%
0%
68%
25
flagthe United Arab Emirates
6%
6%
12%
67%
31
flagthe United Kingdom
7%
22%
2%
66%
667
flagthe Netherlands
10%
25%
0%
64%
84
flagUkraine
16%
16%
3%
64%
31
flagPakistan
4%
13%
17%
63%
46
flagPoland
8%
26%
2%
61%
16473
flagGermany
4%
32%
0%
60%
211
flagthe United States
10%
22%
6%
59%
1089
flagIndia
9%
22%
6%
59%
553
flagthe Philippines
7%
17%
11%
58%
51
flagNorway
10%
27%
4%
58%
48
flagRepublic of Ireland
10%
29%
2%
57%
78
flagCanada
6%
31%
5%
55%
58
flagUnknown
7%
35%
1%
54%
366
flagNigeria
17%
13%
21%
43%
23

Gender

men58%
women63%
glass
9%
7%
ceramic
29%
26%
metal
2%
2%
glass-ceramic
58%
63%

Language versions

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answers
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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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