What 3 properties did Mendeleev write on his cards to organize 63 elements?

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".

The compound formed from 2 atoms of hydrogen and one atom of oxygen is

To separate a mixture of hard candies nd marbles the most efficient method would be