How can water change from one state of matter to another ?

This change is called MELTING. If water is heated, it changes to steam (a gas).

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

distance, luminosity, brightness, radius, chemical composition, and temperature