16 Questions
What is the composition of soda-lime glass based on the text?
13-17% NaO, 5-10% CaO, 70-75% SiO2
Which type of glass is known for its high resistance to thermal shock?
Borosilicate glass
What is the main difference between borosilicate glass and soda-lime glass?
Melting point
Which industrial application is NOT mentioned for silica glass?
Electrical insulators
What is the identifying substance in clay that results from the alteration of feldspar?
Kaolinite
In the context of technical ceramics, what is the equivalent of mild steel in metals?
Alumina
What is the maximum operating temperature influenced by in alumina-based technical ceramics?
Increasing alumina content
What is the single crystal form of alumina that is used for watch faces and cockpit windows of high-speed aircraft?
Sapphire
What characteristic makes glass ceramic unique compared to other glasses?
High heat-resistance
What is a typical use of glass ceramics mentioned in the text?
Creating cookware
Why is it stated that glass is 'difficult to work' in the text?
It is hard to shape using ordinary methods
What is the process that glass ceramics undergo to achieve their unique characteristics?
Nucleating small crystals through controlled cooling
What is the purpose of adding Chromium oxide to alumina?
To improve abrasion resistance
Which material is nearly as hard as diamond but vastly less expensive?
Born carbide (B4C)
What is the typical use of Tungsten Carbide (WC)?
Bulletproof surface
What property of alumina is improved by adding sodium silicate?
Processability
Explore how the mineral feldspar in igneous rocks, like granite, transforms into clay over time due to erosion. Learn about the process of disintegration and alteration to kaolinite, the identifying substance in clay. Understand how different mixtures result in different types of clay such as pegmatite.
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