8. At higher temperatures . A. particles in an object have less energy
B. particles in an object move faster
C. a gas contracts
D. particles vibrate slowly

B. particles in an object move faster

Explanation:

At higher temperatures, particles in an object moves faster.

Temperature is the degree of hotness or coldness of a body.

At higher temperature, the substance is very hot. Temperature is related to the heat energy content of a bodyAs the temperature increases, the average kinetic energy of the particles of system increases more and more. This is in compliance with the kinetic molecular theory of matter. Therefore, at higher temperatures, particles in an object move faster.

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

Exothermic,  physical change after it is already baked