Why does Avogrados principle hold true for ideal gases that have small particles and for ideal gases that have large particles?

The kinetic energy of a large particle and a small particle are the same at the same temperature
A large particle is like a mack truck it may not move very fast because of its mass and inertia but it makes up for the lack of velocity with its heavy mass
A small particle is like a sports care it may not have much for mass but it has a very fast velocity. The velocity squared makes up for the small mass.
temperature is a measure of kinetic energy so all particles regardless of their size have the same kinetic energy at the same temperature.

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

Answers are 1,2,4 its correct on edgenuity.