Есть ли такое вещество?

[Skoff]

Приветствую всех! Интересует следующий вопрос: есть ли такое вещество, которое при изменении температуры меняет цвет с светлого на темный и наоборот? Заранее спасибо

[Земский]

Вещества, изменяющие цвет при изменении температуы имеются, на этом явлении основано определение температуры с помощью термокарандашей.
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Нет дыма без огня

[Ludmila]

Cуществует ли вещество C2H4N ?

[Земский]

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[wigrafzrolok]

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