The test for sulfate ion (SO4 2-) involved the addition of aqueous barium nitrate (Ba(NO3)2). Name another substance that would have been equally effective and explain your reasoning.

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

Complete each row of the table below by filling in the missing prefix or missing exponent.