When measure hot or cold something is you measure its?

Answer 1

temperature

Answer 2

When measuring how hot or cold something is, you measure its temperature using a thermometer. Temperature is a measure of the average kinetic energy of the particles in a substance - higher temperature means more kinetic energy and increased molecular motion, resulting in what we perceive as hot, while lower temperature means less kinetic energy and decreased molecular motion, resulting in what we perceive as cold.