Classifying Compounds

Acids, Bases & Salts Compounds are classified into 3 categories: Acids Bases Salts

Salts Any ionic compound which is not an acid nor a base. e.g. NaCl sodium chloride (table salt) MgF2 magnesium fluoride CuSO4 copper(II) sulphate Salts are formed when: Acids react with Bases (Neutralization) H2SO4 + Mg(OH)2  MgSO4 + 2 H2O Acid Base Salt water Salts are made of a positive ion (from a base) and a negative ion (from an acid)

Salts continued Salts can also be formed from oxides, carbonates or metals reacting with acids. Acids + metals 2 HCl(aq) + Mg(s)  MgCl2(aq) + H2(g) Salt hydrogen gas Acids + carbonates H2SO4(aq) + CaCO3(s)  CaSO4(aq) + H2O(l) + CO2(g) Salt carbonates neutralize acids protect lakes and ecosystems from acid rain

Assignment Homework: Neutralization Reactions Worksheet