METAL

Question 1

-natural
- In forms of metal ores
-inorganic
- discovered in early 19th to late 20th
century
- used in industrial revolution

Answer 1

metals

Question 2

Properties

Answer 2

 Malleability
 Ductility
 Conductivity
 Lustrous

Question 3

classification of metals

Answer 3

ferrous metals
nonferrous metals

Question 4

contains iron
magnetic
ferrum (iron)

Answer 4

ferrous metals

Question 5

not iron-based
use of magnet
malleability

Answer 5

nonferrous metals

Question 6

ferrous metals 5 examples

Answer 6

 Iron
 Pig iron
 Cast iron
 Wrought iron
 Steel

Question 7

nonferrous metals 7 examples

Answer 7

 Copper
 Aluminum
 Zinc
 Tin
 Lead
 Cobalt
 Nickel

Question 8

uses of metals

Answer 8

 Electronics
 Transportations
 Telecommunication
 Construction

Question 9

application of metal

Answer 9

 Reinforcements – steel rebars
(tension, compression,
 Structures
 Cladding
 Roofing
 Plumbing
 Heating equipment
 Framing
 Windows

Question 10

types of metals

Answer 10

steel
alloy steel
stainless steel
iron
cast iron
wrought iron
aluminum
bronze
lead

Question 11

• Used in buildings, infrastructure,
  tools, ships, trains, cars, bicycles,
  machines, electrical appliances, and
  weapons.

Answer 11

steel

Question 12

• High tensile strength and low cost.

Answer 12

steel

Question 13

• World’s most important
  engineering and construction
  material

Answer 13

steel

Question 14

• An alloy of iron and ___ with
  improved strength and fracture
  resistance

Answer 14

carbon

Question 15

• A type of steel alloyed with several
  elements such as molybdenum,
  manganese, nickel, chromium,
  vanadium, silicon, and boron that
  increase strength, hardness, wear
  resistance, and toughness

Answer 15

alloy steel

Question 16

• used to manufacture pipes,
  especially pipes for energy-related
  applications
• used in manufacturing of heating
  elements in appliances like toasters,
  silverware, pots and pans, and
  corrosion-resistant containers

Answer 16

alloy steel

Question 17

• Made primarily from iron and
  carbon in a two-step process
• The addition of chromium (cr) and
  other alloying elements such as
  nickel (Ni) to create a corrosionresistant product makes the
  stainless steel different

Answer 17

stainless steel

Question 18

• Used in the kitchen accessories,
  cutlery and cookware
• less ductile grades of ___ are
  used to make knife blades with
  sharp edges

Answer 18

stainless steel

Question 19

• more ductile grades of ___ are
  used for items that have to be
  molded into shape such as cookers,
  grills, sinks and saucepans

Answer 19

stainless steel

Question 20

• used to manufacture steel, used in
  civil engineering (reinforced
  concrete, girders etc) and in
  manufacturing.

Answer 20

iron

Question 21

• It is a lustrous, ductile, malleable,
  silver-grey in colour
• the tenth most abundant element
  in the universe

Answer 21

iron

Question 22

• An alloy of iron that contains 2 to
  4 percent carbon, along with varying
  amounts of silicon and manganese
  and traces of impurities such as
  sulfur and phosphorus
• made by reducing iron ore in a
  blast furnace.

Answer 22

cast iron

Question 23

• A soft, ductile, fibrous variety that
  is produced from a semi fused mass
  of relatively pure iron globules
  partially surrounded by slag usually
  contains less than 0.1 percent
  carbon and 1 or 2 percent slag.

Answer 23

wrought iron

Question 24

• most abundant metallic element in
  earth’s crust and the most widely
  used nonferrous metal
• it is hard, ductile, malleable, and
  lustrous with a high melting and
  boiling point

Answer 24

aluminum

Question 25

is typically 88 percent copper and about 12 percent tin bronze is of exceptional historical interest and still finds wide applications.

Answer 25

modern bronze

Question 26

* An alloy traditionally composed of copper and tin

Answer 26

bronze

Question 27

* A heavy metal that is denser than most common materials * It is soft and malleable and has a relatively low melting point.

Answer 27

lead

Question 28

when freshly cut, lead is a shiny __ with a hint of __.

Answer 28

gray, blue

Question 29

* chemical element, metal of group 8 (___) of the periodic table, the most-used and cheapest metal

Answer 29

VIIIB