Charles Martin Hall
Explication
Charles Martin Hall is credited with discovering the Hall-Héroult process, which is the method for producing aluminum efficiently and cheaply, enabling its widespread use in industries like aerospace and packaging.
It acts as a catalyst in chemical reactions
Explication
Platinum's primary function that makes it highly valuable industrially is its role as an excellent catalyst in various chemical reactions, such as in catalytic converters and chemical manufacturing, due to its unreactive and catalytic properties.
To enable iron to be attracted to magnets and used in electrical devices
Explication
The primary function of iron's magnetic property is to enable it to be attracted to magnets, which is crucial for its use in electrical devices, transformers, and motors. This property allows iron to be used effectively in applications that rely on magnetism, unlike corrosion resistance, malleability, or conductivity, which are separate properties.
Used as a coating on steel cans to prevent rusting
Explication
Tin's high malleability and non-corrosive nature make it ideal for coating steel cans, preventing rust and ensuring the safety and durability of food packaging.
Around 4500 BCE during the Chalcolithic period
Explication
The correct answer is 'Around 4500 BCE during the Chalcolithic period' because this marks the beginning of the Copper Age, when humans first extensively used copper for tools and ornaments, establishing its significance in technological development.
Silver is highly malleable, allowing it to be shaped into intricate designs.
Explication
Silver's high malleability allows it to be hammered or rolled into thin sheets and intricate shapes, which is essential for jewelry and decorative items.
Its high melting point
Explication
Tungsten's most distinctive feature is its high melting point, which allows it to withstand extremely high temperatures, making it ideal for applications like electrodes and filaments in light bulbs.
Mercury is a liquid at room temperature and used in thermometers, while silver is a solid, malleable metal used in jewelry and electronics.
Explication
Mercury's key distinctive property is that it is a liquid at room temperature, making it suitable for use in thermometers and barometers, whereas silver is a solid, malleable, and highly conductive metal used in jewelry and electronics. The first option correctly captures these differences and similarities.
Zinc's use in galvanization of steel
Explication
Zinc's corrosion resistance directly leads to its use in galvanization, where it coats iron and steel to prevent rusting.
A shiny yellow metal that is highly malleable and ductile, resistant to corrosion, and a good conductor of heat and electricity
Explication
Gold is primarily characterized as a shiny yellow metal that is highly malleable and ductile, resistant to corrosion, and a good conductor of heat and electricity, which makes it unique among metals and suitable for jewelry, electronics, and coins.
Burning with a bright white light
Explication
Magnesium is primarily known for burning with a bright white light when ignited, which is a distinctive property used in fireworks and flares.
Used in making batteries
Explication
Lead is primarily used in making batteries, as it is a dense, malleable, and ductile metal suitable for this purpose. The other options are plausible uses for other metals but are not the main applications of lead according to the provided content.
Mémorisez les réponses avec 24 flashcards sur Metals and Alloys: Properties and Applications.
Gold — properties?
Malleable, ductile, corrosion-resistant, good conductor.
Gold — main uses?
Jewelry, electronics, coins.
Silver — properties?
Highly malleable, ductile, excellent conductor.
Consultez la fiche de révision complète sur Metals and Alloys: Properties and Applications.
Voir la fiche →Importe ton cours et l'IA génère des QCM avec corrections en 30 secondes.
Générateur de QCM