For example, the three levels of representation in: (1) chemical reactions involving the combustion of metals were discussed in the topic on the metal reactivity series, (2) chemical reactions between dilute acids and reactive metals,
neutralization reactions between strong acids and strong alkalis,
neutralization reactions between dilute acids and metal oxides, and chemical reactions between dilute acids and metal carbonates in the topic on acids and bases, (3) ionic precipitation reactions in the topic on salts, and (4) metal-ion displacement reactions in the topic on the electrochemical series.