Metals And Non Metals

Question 1

Name a metal which does not react with cold as well as hot water, but reacts with any other physical state of water

Answer 1

Aluminium

Question 2

Name a metal which does not react with any physical state of water

Answer 2

Copper

Question 3

Why is copper used to make hot water tanks? Where is steel is not?

Answer 3

Copper is a better conductor of heat as compare to steel therefore hot water tanks are made of copper.

Question 4

A metal which is preserved in kerosene

Answer 4

Sodium

Question 5

A lustrous coloured non-metal

Answer 5

Iodine

Question 6

Metal which can melt while kept on palm

Answer 6

Gallium and caesium

Question 7

A metal which is a poor conductor of heat

Answer 7

Lead and mercury

Question 8

Metal which can be easily cut with a knife

Answer 8

Sodium

Question 9

Metal which is a liquid at room temperature

Answer 9

Mercury

Question 10

Tell which is the best conductor of heat

Answer 10

Silver and copper

Question 11

Sodium metal is kept immersed in kerosene

Answer 11

Sodium metal is so reactive that it reacts vigourously with oxygen present in air. It catches fire and starts burning when kept open in the air. Sodium metal is stored under kerosene oil to prevent its reaction with oxygen, moisture and carbon dioxide in air.

Question 12

Wires are used in electrical connections

Answer 12

Copper is the next best conductor of electricity after silver metal so electric wires are made up of copper as silver being a costly metal and cannot be used to make electrical wires

Question 13

What is malleable?

Answer 13

Party which allows the metals do we have word into thin sheets. Gold and silver metal are the best malleable metal.

Question 14

What is ductility?

Answer 14

The property which allows the metals to be drawn into thin wires. Gold is the most ductile metal.

Question 15

What is anodising?

Answer 15

Is a process of forming thick layer of oxide of aluminium oxide over the articles of aluminium metal

Question 16

Why Are ionic compounds solid

Answer 16

Ionic compounds are solids because your oppositely charged ions attract one another strongly and form a regular crystal structure

Question 17

What Happens when metals react with water

Answer 17

Metals react with water to form metal oxide and hydrogen gas. Metal oxides are soluble in water for that, dissolve it in to form better hydroxides

Question 18

Does a metal, not release hydrogen gas or reacting with that of nitric acid?

Answer 18

Nitric acid is a strong oxidising agent and oxidise is the release to hydrogen gas to a water

Question 19

Why Are carbonate and sulphide ores converted into oxides during the process of extraction

Answer 19

Carbonate and sulphide ores are converted into oxides as a reduction of oxides makes it easier to extract metals from them

Question 20

What type of oxides are formed by metals?

Answer 20

Metals form basic oxides with oxygen, these basic oxides turn red litmus into blue

Question 21

Define amphoteric oxides

Answer 21

Some metal oxides show both acidic as well as basic behaviour goes metal oxides which react with both acids as well as basis to form salt and water or known as amphoteric oxides