Metals and Non-Metals

Question 1

What is Lustre?

Answer 1

Shining appearance

Question 2

What is Malleability?

Answer 2

The property by which a substance can be beaten into sheets

Question 3

What is Ductility?

Answer 3

The property by which a substance can be drawn into thin wires

Question 4

What is Sonorous?

Answer 4

Production of loud noise upon striking

Question 5

Which is the most malleable metal?

Answer 5

Gold

Question 6

Which is the most ductile metal?

Answer 6

Gold

Question 7

How much wire can be drawn from 1 g of Gold?

Answer 7

2 km

Question 8

Which are the best conductor of heat and electricity?

Answer 8

Silver and Copper

Question 9

Which are the poorest conductors of heat and electricity?

Answer 9

Lead and Mercury

Question 10

What are the wires that carry electric current coated with?

Answer 10

Polyvinylchloride (PVC) or rubber-like material

Question 11

Name a metal that is liquid at room temperature.

Answer 11

Mercury (Hg)

Question 12

Name a metalloid that is liquid at room temperature.

Answer 12

Gallium (Ga) and Caesium (Cs)

Question 13

Name a non-metal that is liquid at room temperature.

Answer 13

Bromine (Br)

Question 14

Name a metal that has very low melting points.

Answer 14

Gallium (Ga) and Caesium (Cs)

Question 15

Name a non-metal that is lustrous.

Answer 15

Iodine (I)

Question 16

What are the different forms of Carbon called?

Answer 16

Allotropes

Question 17

Which is the hardest natural substance known?

Answer 17

Diamond

Question 18

Name a non-metal with High Melting and Boling point.

Answer 18

Diamond

Question 19

Name the best non-metal conductor of electricity.

Answer 19

Graphite

Question 20

Name the softest Metals.

Answer 20

Sodium (Na) and Potassium (K)

Question 21

Sodium, Potassium and Lithium are called?

Answer 21

Alkali Metals

Question 22

Iodine, Chlorine, Bromine, Flourine are called?

Answer 22

Halogen elements

Question 23

Most non-metals produce __________.

Answer 23

Acidic oxides

Question 24

Most metals produce _________.

Answer 24

Basic oxides

Question 25

What is the Melting point of Gallium?

Answer 25

29.76 ⁰C

Question 26

What is the Melting point of Caesium?

Answer 26

28.44 ⁰C

Question 27

Name a solid Non-metal.

Answer 27

Sulphur (S) and Phosphorous (Ph)

Question 28

Name a gaseous Non-metal.

Answer 28

Oxygen (O) and Hydrogen (H)

Question 29

Metal + Oxygen -->?

Answer 29

Metal oxide

Question 30

Metal oxides which react with both acids and bases to produce salt and water are called __________.

Answer 30

Amphoteric oxides

Question 31

Examples of Amphoteric oxides

Answer 31

Aluminum oxide and Zinc oxide

Question 32

_____________ is the process of forming a thick oxide layer on the surface of aluminium.

Answer 32

Anodizing

Question 33

Which metal reacts so vigorously with oxygen that they catch fire if left in the open?

Answer 33

Potassium and Sodium

Question 34

K and Na are immersed in _________.

Answer 34

Kerosene

Question 35

At ordinary temp. surface of which metals are covered with a thin layer of oxide?

Answer 35

Magnesium, Aluminium, Zinc and Lead

Question 36

______ does not burn on heating but _______ burn vigorously when sprinkled in a flame.

Answer 36

Iron, Iron filings

Question 37

What is the black coating on heated copper metal?

Answer 37

Copper (II) oxide

Question 38

Which metals do not react with oxygen at higher temperatures?

Answer 38

Gold and Silver

Question 39

During Anodizing Aluminium is made the ______.

Answer 39

Anode

Question 40

Anodizing involves electrolysing which acid?

Answer 40

Sulphuric acid (H2SO4)

Question 41

Metal + Water --> | Metal oxide + Water -->

Answer 41

Metal oxide + Hydrogen | Metal Hydroxide

Question 42

___________________ reacts vigorously with cold water. Hydrogen catches fire.

Answer 42

Potassium and Sodium

Question 43

__________ reacts less vigorously with cold water. Hydrogen does not catch fire.

Answer 43

Calcium

Question 44

___________ reacts with hot water. Hydrogen gas stick to the surface of the metal.

Answer 44

Magnesium

Question 45

____________________ react with steam. It forms oxides and not hydroxides as they are not soluble in water.

Answer 45

Aluminium, zinc and iron

Question 46

_______________________________________________ do not react with water at all.

Answer 46

Copper, lead, gold and silver

Question 47

Metal + Dilute acid -->

Answer 47

Salt + Hydrogen gas

Question 48

__________ and ____________ react with very dilute HNO3 to evolve H2 gas

Answer 48

Magnesium and Manganese

Question 49

Which acid does not evolve Hydrogen gas?

Answer 49

Nitric acid

Question 50

Aqua regia is also called?

Answer 50

Royal Water

Question 51

What is the composition of Aqua regia?

Answer 51

It is a freshly prepared mixture of concentrated HCl and concentrated HNO3 in the ratio of 3:1.

Question 52

Metal A + Salt solution of B -->?

Answer 52

Salt solution of A + Metal B

Question 53

Name the metals in the decreasing order of their reactivity.

Answer 53

1. Potassium (K) 2. Sodium (Na) 3. Calcium (Ca) 4. Magnesium (Mg) 5. Aluminium (Al) 6. Zinc (Zn) 7. Iron (Fe) 8. Tin (Sn) 9. Lead (Pb) 10. Hydrogen (H) 11. Copper (Cu) 12. Mercury (Hg) 13. Silver (Ag) 14. Gold (Au) 15. Platinum (Pt)

Question 54

Why do elements react?

Answer 54

The reactivity of elements is the tendency to attain a completely filled valence shell.

Question 55

Compounds formed by the transfer of electrons from a metal to a non-metals is known as?

Answer 55

Ionic or Electrovalent compounds

Question 56

What are the different shells of an atom?

Answer 56

K, L, M, N

Question 57

Negativel charged ions are called?

Answer 57

Anion

Question 58

Positively charged ions are called?

Answer 58

Cation