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15-12-2016
Chemistry

contestada

Tooth fillings are often made of gold or porcelain because these materials are ______.
a.
explosive
c.
visually pleasing
b.
nonreactive
d.
chemically similar to teeth

Please select the best answer from the choices provided

Respuesta :

Аноним Аноним

15-12-2016

They are non-reactive because they can't rust. When iron is in oxygen it rust, gold is not like that.

I think I'm correct

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