點解低比熱容量吸熱較少

Question

點解低比熱容量所吸收既熱較少

Answer 1

因為 energy= 質量 x 比熱容量x (溫度改變)
所以比熱容量減少
"質量"和"溫度改變"不變
所以energy 會跌 所以吸收gei 熱減少

Answer 2

Specific heat capacity of a substance depends on the molecular structure and arrangement of the material and the strength of intermolecular force. Substances with low specific heat capacity means that the molecules of the substance can be set into vigorous vibration and translational motion (in the case of liquid and gases) with less energy due to smaller intermolecular force. Since the vibrational and translational motion of the moelcules are related to the temperature of the substance, less energy is thus needed for low specific heat capacity substance to attain the same rise in temperature.

Answer 3

點解低比熱容量吸熱較少

點解低比熱容量所吸收既熱較少

因為根據物理公式

E=mc△T

假設mc與其溫度的數值不變,

如果c數值下跌,所得能量E會隨之減少.


不妨用物理公式想想,會較易明:)