Why does speed of the molecule increase with temperature and why does resistivity of semiconductors decrease with increase in temperature?
Molekülün hızı kinetik enerjiye bağlı. Sıcaklık ise kinetik enerjiye bağlı ve doğru orantılı. Molekül hızı doğrudan sıcaklığın karekökü ile orantılı olabilir. Sıcaklık arttıkça özdirenç azalır. Çünkü genleşme olduğu için moleküller arası çekim kuvveti azalır.
Here is a translation of the contribution of Şükrü Aktaş, obtained from DeepL: "The speed of the molecule depends on kinetic energy. Temperature depends on kinetic energy and is directly proportional. Molecular speed can be directly proportional to the square root of temperature. As the temperature increases, the resistivity decreases. Because there is expansion, the force of attraction between molecules decreases."
Please elaborate on the last sentence (about the intermolecular forces): Why should this be so?
"States of matter (solid, liquid, gas)" – what's that supposed to mean? Please make it a statement by making a full sentence out of it.
Şükrü Aktaş: Note that "phase transition" (e.g., from solid to liquid) has nothing to do with "expansion" – because the latter takes places without phase transition; cf. thermal expansion.
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