An element, Y, has seven valence electrons. It bonds ionically, in a one-to-one ratio, with another element, X.

State the possible identities of X and Y and their characteristic charges.

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?