Asodium atom has 1 valence electron in its third shell. what will it do when forming an ion? a. gain 1 valence electron b. lose 1 valence electron c. gain 7 valence electrons d. lose 7 valence electrons

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Which is true of a liquid? it has a definite volume but not a definite mass. it has a definite mass but not a definite volume. it has a definite volume but not a definite shape. it has a definite shape but not a definite volume.