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Chemistry > Metals and Non-Metals > Flashcards

Metals and Non-Metals Flashcards

1
Q

What is Lustre?

A

Shining appearance

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2
Q

What is Malleability?

A

The property by which a substance can be beaten into sheets

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3
Q

What is Ductility?

A

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

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4
Q

What is Sonorous?

A

Production of loud noise upon striking

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5
Q

Which is the most malleable metal?

A

Gold

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6
Q

Which is the most ductile metal?

A

Gold

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7
Q

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

A

2 km

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8
Q

Which are the best conductor of heat and electricity?

A

Silver and Copper

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9
Q

Which are the poorest conductors of heat and electricity?

A

Lead and Mercury

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10
Q

What are the wires that carry electric current coated with?

A

Polyvinylchloride (PVC) or rubber-like material

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11
Q

Name a metal that is liquid at room temperature.

A

Mercury (Hg)

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12
Q

Name a metalloid that is liquid at room temperature.

A

Gallium (Ga) and Caesium (Cs)

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13
Q

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

A

Bromine (Br)

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14
Q

Name a metal that has very low melting points.

A

Gallium (Ga) and Caesium (Cs)

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15
Q

Name a non-metal that is lustrous.

A

Iodine (I)

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16
Q

What are the different forms of Carbon called?

A

Allotropes

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17
Q

Which is the hardest natural substance known?

A

Diamond

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18
Q

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

A

Diamond

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19
Q

Name the best non-metal conductor of electricity.

A

Graphite

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20
Q

Name the softest Metals.

A

Sodium (Na) and Potassium (K)

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21
Q

Sodium, Potassium and Lithium are called?

A

Alkali Metals

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22
Q

Iodine, Chlorine, Bromine, Flourine are called?

A

Halogen elements

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23
Q

Most non-metals produce __________.

A

Acidic oxides

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24
Q

Most metals produce _________.

A

Basic oxides

25
Q

What is the Melting point of Gallium?

A

29.76 ⁰C

26
Q

What is the Melting point of Caesium?

A

28.44 ⁰C

27
Q

Name a solid Non-metal.

A

Sulphur (S) and Phosphorous (Ph)

28
Q

Name a gaseous Non-metal.

A

Oxygen (O) and Hydrogen (H)

29
Q

Metal + Oxygen –>?

A

Metal oxide

30
Q

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

A

Amphoteric oxides

31
Q

Examples of Amphoteric oxides

A

Aluminum oxide and Zinc oxide

32
Q

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

33
Q

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

A

Potassium and Sodium

34
Q

K and Na are immersed in _________.

35
Q

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

A

Magnesium, Aluminium, Zinc and Lead

36
Q

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

A

Iron, Iron filings

37
Q

What is the black coating on heated copper metal?

A

Copper (II) oxide

38
Q

Which metals do not react with oxygen at higher temperatures?

A

Gold and Silver

39
Q

During Anodizing Aluminium is made the ______.

40
Q

Anodizing involves electrolysing which acid?

A

Sulphuric acid (H2SO4)

41
Q

Metal + Water –>

Metal oxide + Water –>

A

Metal oxide + Hydrogen

Metal Hydroxide

42
Q

___________________ reacts vigorously with cold water. Hydrogen catches fire.

A

Potassium and Sodium

43
Q

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

44
Q

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

45
Q

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

A

Aluminium, zinc and iron

46
Q

_______________________________________________ do not react with water at all.

A

Copper, lead, gold and silver

47
Q

Metal + Dilute acid –>

A

Salt + Hydrogen gas

48
Q

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

A

Magnesium and Manganese

49
Q

Which acid does not evolve Hydrogen gas?

A

Nitric acid

50
Q

Aqua regia is also called?

A

Royal Water

51
Q

What is the composition of Aqua regia?

A

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

52
Q

Metal A + Salt solution of B –>?

A

Salt solution of A + Metal B

53
Q

Name the metals in the decreasing order of their reactivity.

A
  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)
54
Q

Why do elements react?

A

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

55
Q

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

A

Ionic or Electrovalent compounds

56
Q

What are the different shells of an atom?

A

K, L, M, N

57
Q

Negativel charged ions are called?

58
Q

Positively charged ions are called?

Chemistry (4 decks)

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