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%
17%
0%
75%
62
flagMalaysia
9%
12%
3%
75%
33
flagItaly
12%
9%
4%
73%
41
flagFrance
3%
25%
0%
71%
66
flagDenmark
0%
30%
0%
69%
26
flagthe United Arab Emirates
6%
6%
12%
67%
31
flagthe United Kingdom
6%
22%
2%
66%
742
flagthe Netherlands
11%
23%
0%
64%
88
flagUkraine
16%
16%
3%
64%
31
flagNorway
8%
25%
3%
63%
60
flagPakistan
3%
12%
19%
63%
57
flagPoland
7%
26%
2%
62%
19202
flagGermany
4%
30%
0%
62%
243
flagthe United States
10%
22%
6%
58%
1126
flagIndia
9%
24%
6%
58%
598
flagRepublic of Ireland
9%
29%
2%
58%
82
flagCanada
7%
28%
4%
57%
64
flagUnknown
7%
34%
1%
55%
831
flagthe Philippines
7%
22%
9%
55%
63
flagNigeria
15%
15%
23%
42%
26

Gender

men57%
women64%
glass
9%
7%
ceramic
30%
26%
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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Details

Author: Bob Stanley
Illustration: Kai Hendry
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