Classify oxides as acidic, including SO(_2) and CO(_2), or basic, including CuO and CaO, related to metallic and non-metallic character

Describe the use of a flame test to identify the cations: (a) lithium, ( Li^+ ) (b) sodium, ( Na^+ ) (c) potassium, ( K^+ ) (d) calcium, ( Ca^{2+} ) (e) barium, ( Ba^{2+} ) (f) copper(II), ( Cu^{2+} )

Describe alkalis in terms of their effect on: (a) litmus (b) thymolphthalein (c) methyl orange