Which statement describes the relative masses of two different particles?

1.a neutron has less mass than a positron.
2.a beta particle has less mass than a neutron.
3.an alpha particle has less mass than a positron.
4.an alpha particle has less mass than a beta particle.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

How can one make a supersaturated solution? (apex)