Many metals react with oxygen to form metal oxides. Potassium and sodium are soft metal which are easily cut exposing a shiny surface which changes to dull rapidly. The change from shiny to dull is ...

Figure 1: Electronic structures of Co-containing perovskite oxides. Figure 2: Direct evidence of lattice oxygen oxidation involved in the OER of 18 O-labelled perovskites. Figure 3: pH-dependent OER ...

When metals react with oxygen, metal oxides are formed. The speed of the reaction depends on the reactivity of the metal. Watch this video for a practical demonstration of reacting metals with oyxgen.

Figure 1: The effects of alkali metal cations on CVGs and ORR currents in alkaline solution on Pt(111). Figure 2: The effect of alkali metal cations on HOR and methanol oxidation reaction currents on ...