Obtaining and using metals Flashcards
What is the primary source of metals in the Earth’s crust?
Ores
True or False: All metals can be extracted from their ores using the same method.
False
What is the process of extracting metal from its ore called?
Metallurgy
Fill in the blank: The method used to extract metals that are less reactive than carbon involves __________.
Reduction with carbon
Which metal is commonly extracted using electrolysis?
Aluminum
What is the main disadvantage of using electrolysis for metal extraction?
It is energy-intensive.
What is the term for the impurities left behind after metal extraction?
Slag
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
B) Iron
What is the primary method of extracting iron from iron ore?
Blast furnace
True or False: Metals can be recycled indefinitely without losing their properties.
True
Name the process used to separate metals from their ores by heating them with oxygen.
Roasting
What is the term for the natural rock or mineral from which a metal can be extracted profitably?
Ore
Fill in the blank: The __________ is the process of heating an ore to extract a metal.
Smelting
Which metal is obtained from the ore bauxite?
Aluminum
What is the purpose of using flux in the extraction of metals?
To remove impurities
Multiple Choice: Which of the following metals is most commonly recycled? A) Gold B) Iron C) Mercury
B) Iron
True or False: All metals are good conductors of electricity.
False
What is the primary use of metals in construction?
Structural support
What is an alloy?
A mixture of two or more metals.
Fill in the blank: __________ is the process of using acids to extract metals.
Leaching
Which metal is known for its resistance to corrosion?
Gold
Multiple Choice: Which of the following is a non-ferrous metal? A) Steel B) Copper C) Iron
B) Copper
What is the main environmental concern associated with mining?
Habitat destruction
True or False: Metals can only be extracted from ores through chemical processes.
False
What is the main benefit of recycling metals?
Conserves natural resources
What is the process called when iron is purified?
Refining
Fill in the blank: __________ is the largest producer of aluminum in the world.
China
What is the main use of copper in electrical applications?
Conductivity
Which process is used to extract gold from ore?
Cyanidation
True or False: Steel is an alloy of iron and carbon.
True
What are noble metals?
Metals that are resistant to corrosion and oxidation.
Multiple Choice: Which metal is primarily used in batteries? A) Lead B) Zinc C) Silver
A) Lead
What is the primary function of zinc in galvanization?
Corrosion protection
Fill in the blank: __________ is the term for the process of adding impurities to a metal to improve its properties.
Alloying
What is a common use of titanium?
Aerospace components
True or False: All metals have a high melting point.
False
What is the primary reason for using metals in construction?
Strength and durability
Fill in the blank: The extraction of metals from their ores often involves __________ processes.
Chemical
What is the term for the ability of a metal to be drawn into wires?
Ductility
Multiple Choice: Which of the following metals is the most malleable? A) Gold B) Iron C) Aluminum
A) Gold
What is the main environmental benefit of recycling metals?
Reduces energy consumption
True or False: Reactive metals can be found in their pure form in nature.
False
What is the main component of stainless steel?
Chromium
Fill in the blank: __________ is a metal that is commonly used in the production of coins.
Copper
