State the differences.

Cation and anion

Write the chemical equations for the following activities.

A. NaOH solution was added to HCl solution.

B. Zinc dust was added to dilute

C. Dilute nitric acid was added to calcium oxide.

D. Carbon dioxide gas was passed through KOH solution.

E. Dilute HCl was poured on baking soda.

State the differences.

Acids and bases

State the differences.

Negative electrode and positive electrode.

Classify aqueous solutions of the following substances according to their pH into three groups : 7, more than 7, less than 7.

Common salt, sodium acetate, hydrochloric acid, carbon dioxide, potassium bromide, calcium hydoxide, ammonium chloride, vinegar, sodium carbonate, ammonia, sulphur dioxide.