Obtaining and using metals

Question 1

What is the primary source of metals in the Earth’s crust?

Answer 1

Ores

Question 2

True or False: All metals can be extracted from their ores using the same method.

Answer 2

False

Question 3

What is the process of extracting metal from its ore called?

Answer 3

Metallurgy

Question 4

Fill in the blank: The method used to extract metals that are less reactive than carbon involves __________.

Answer 4

Reduction with carbon

Question 5

Which metal is commonly extracted using electrolysis?

Answer 5

Aluminum

Question 6

What is the main disadvantage of using electrolysis for metal extraction?

Answer 6

It is energy-intensive.

Question 7

What is the term for the impurities left behind after metal extraction?

Answer 7

Slag

Question 8

Multiple Choice: Which of the following is an example of a metal that can be extracted by reduction with carbon? A) Gold B) Iron C) Aluminum

Answer 8

B) Iron

Question 9

What is the primary method of extracting iron from iron ore?

Answer 9

Blast furnace

Question 10

True or False: Metals can be recycled indefinitely without losing their properties.

Answer 10

True

Question 11

Name the process used to separate metals from their ores by heating them with oxygen.

Answer 11

Roasting

Question 12

What is the term for the natural rock or mineral from which a metal can be extracted profitably?

Answer 12

Ore

Question 13

Fill in the blank: The __________ is the process of heating an ore to extract a metal.

Answer 13

Smelting

Question 14

Which metal is obtained from the ore bauxite?

Answer 14

Aluminum

Question 15

What is the purpose of using flux in the extraction of metals?

Answer 15

To remove impurities

Question 16

Multiple Choice: Which of the following metals is most commonly recycled? A) Gold B) Iron C) Mercury

Answer 16

B) Iron

Question 17

True or False: All metals are good conductors of electricity.

Answer 17

False

Question 18

What is the primary use of metals in construction?

Answer 18

Structural support

Question 19

What is an alloy?

Answer 19

A mixture of two or more metals.

Question 20

Fill in the blank: __________ is the process of using acids to extract metals.

Answer 20

Leaching

Question 21

Which metal is known for its resistance to corrosion?

Answer 21

Gold

Question 22

Multiple Choice: Which of the following is a non-ferrous metal? A) Steel B) Copper C) Iron

Answer 22

B) Copper

Question 23

What is the main environmental concern associated with mining?

Answer 23

Habitat destruction

Question 24

True or False: Metals can only be extracted from ores through chemical processes.

Answer 24

False

Question 25

What is the main benefit of recycling metals?

Answer 25

Conserves natural resources

Question 26

What is the process called when iron is purified?

Answer 26

Refining

Question 27

Fill in the blank: __________ is the largest producer of aluminum in the world.

Answer 27

China

Question 28

What is the main use of copper in electrical applications?

Answer 28

Conductivity

Question 29

Which process is used to extract gold from ore?

Answer 29

Cyanidation

Question 30

True or False: Steel is an alloy of iron and carbon.

Answer 30

True

Question 31

What are noble metals?

Answer 31

Metals that are resistant to corrosion and oxidation.

Question 32

Multiple Choice: Which metal is primarily used in batteries? A) Lead B) Zinc C) Silver

Answer 32

A) Lead

Question 33

What is the primary function of zinc in galvanization?

Answer 33

Corrosion protection

Question 34

Fill in the blank: __________ is the term for the process of adding impurities to a metal to improve its properties.

Answer 34

Alloying

Question 35

What is a common use of titanium?

Answer 35

Aerospace components

Question 36

True or False: All metals have a high melting point.

Answer 36

False

Question 37

What is the primary reason for using metals in construction?

Answer 37

Strength and durability

Question 38

Fill in the blank: The extraction of metals from their ores often involves __________ processes.

Answer 38

Chemical

Question 39

What is the term for the ability of a metal to be drawn into wires?

Answer 39

Ductility

Question 40

Multiple Choice: Which of the following metals is the most malleable? A) Gold B) Iron C) Aluminum

Answer 40

A) Gold

Question 41

What is the main environmental benefit of recycling metals?

Answer 41

Reduces energy consumption

Question 42

True or False: Reactive metals can be found in their pure form in nature.

Answer 42

False

Question 43

What is the main component of stainless steel?

Answer 43

Chromium

Question 44

Fill in the blank: __________ is a metal that is commonly used in the production of coins.

Answer 44

Copper