Question

Table 4.4 : Metals and Non-metals in Acids and Bases
S.No.
Name of the Base
Metal
Non-metal
Name of the Acid
1
Calcium hydroxide
Calcium
Sulphuric acid
Sulphur
2
3.
5.​

Answer 1

Answer:-

Giving answer of 1st only

BASES

Sodium hydroxide

Lithium hydroxide

Potassium hydroxide

Calcium hydroxide

METAL

Gold

Silver

Copper

Iron

Non-Metal

Oxygen

Hydrogen

Carbon

Nitrogen

Acid

Nitric acid

Hydrochloric acid

Sulphuric acid

Phosphoric acid

Necessary:-

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Answer 2

Metals and Non-metals are classified in Acids and Bases as follows:

1. Metal - Calcium; Base - Calcium hydroxide

2. Non-metal - Sulphur; Acid - Sulphuric acid

Calcium is metal and it forms basic calcium hydroxide.

• The calcium given here is metal. It lies in the second group and fourth period of the periodic table. (All the elements in group 2 are metals.)
• The oxides of metals are formed as metal reacts with oxygen, which in turn, react with water and form metal hydroxide.
• Calcium reacts with oxygen forming calcium oxide, and calcium oxide reacts with water to form calcium hydroxide.
• Calcium hydroxide is basic in nature.

Sulphur is non-metal and it forms acidic sulphuric acid.

• The sulphur is non-metal as it lies sixteenth group and third period.
• The oxides of non metals are formed when nonmetal reacts with oxygen. The nonmetal oxides react with water to give acids.
• Sulphur reacts with oxygen forming sulphur trioxide, which upon reaction with water, gives sulphuric acid.