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
8%
12%
0%
80%
50
flagItaly
13%
6%
6%
73%
30
flagMalaysia
11%
11%
3%
73%
26
flagFrance
5%
21%
0%
72%
37
flagthe Netherlands
11%
20%
0%
68%
72
flagDenmark
0%
31%
0%
68%
19
flagthe United Arab Emirates
4%
4%
17%
65%
23
flagthe United Kingdom
6%
24%
3%
64%
519
flagPakistan
5%
16%
13%
62%
37
flagPoland
8%
27%
2%
60%
12549
flagGermany
3%
33%
0%
60%
178
flagUkraine
15%
25%
0%
60%
20
flagthe United States
10%
22%
6%
59%
995
flagIndia
9%
22%
6%
59%
468
flagthe Philippines
8%
17%
12%
57%
47
flagNorway
8%
30%
5%
55%
36
flagRepublic of Ireland
7%
37%
1%
53%
56
flagCanada
7%
30%
5%
53%
52
flagNigeria
10%
10%
26%
52%
19
flagLithuania
23%
23%
0%
52%
17

Gender

men59%
women64%
glass
9%
7%
ceramic
27%
25%
metal
2%
2%
glass-ceramic
59%
64%

Language versions

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answers
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flag
What kind of material is this cooktop made of?
2286
59%

Details

Author: Bob Stanley
Illustration: Kai Hendry
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