1. which of the following is a direct cause of a substance’s temperature increase? (1 point). energy is removed from the particles of the substance.. kinetic energy is added to the particles of the substance.. the number of atoms and molecules in a substance changes.. the volume of the substance decreases.. 2. as the temperature of a substance increases, its volume tends to increase due to (1 point). thermal equilibrium.. thermal energy.. thermal expansion.. thermal contraction..
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Ответ:
Ответ:
1. option b
2. option c
Explanation:
1. When temperature of a substance is increased, it is actually caused by the increase in the kinetic energy of the particles of the substance. The particles vibrate more rigorously. Average kinetic energy of a gas is proportional to temperature:
K.E. =0.5 kT²
thus, option b is correct.
2. As the temperature increases, the substance undergoes thermal expansion. Thus, the volume increases.
Option c is correct
Ответ: