A group of students is setting up a test to see whether earthworms, like those shown in the photo, prefer rough or smooth surfaces

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

How many valence electrons are in atom of radon?