Thermochromism

Thermochromism is the property of substances to change color due to a change in temperature. A mood ring is an excellent example of this phenomenon, but thermochromism also has more practical uses, e.g. in baby bottles (changes to a different color when cool enough to drink) or kettles (changes when water is at or near boiling point). Thermochromism is one of several types of chromism.

Read more about ThermochromismInorganic Materials

Other articles related to "thermochromism":

Thermochromism - Inorganic Materials
... More dramatic examples of thermochromism are found in materials that undergo phase transition or exhibit charge-transfer bands near the visible region ...