Hw Flashcards
What are the primary components of glass?
Silica (SiO2), soda (Na2O), and lime (CaO).
True or False: Glass is a crystalline solid.
False; glass is an amorphous solid.
Fill in the blank: The process of heating glass to a high temperature and then cooling it rapidly is called __________.
annealing.
What is the main use of silica in glass production?
Silica acts as the primary glass-forming agent.
Which type of glass is known for its high resistance to thermal shock?
Borosilicate glass.
What are ceramics primarily made from?
Clay and other inorganic raw materials.
True or False: Ceramics are typically good conductors of electricity.
False; ceramics are generally insulators.
What is the term for the process of shaping ceramic materials and then heating them?
Firing.
What property of ceramics makes them suitable for high-temperature applications?
High melting points.
Fill in the blank: __________ is a common use of ceramics in everyday life.
Pottery.
What are polymers made of?
Long chains of repeating molecular units called monomers.
True or False: All polymers are synthetic.
False; there are natural polymers as well.
What is the difference between thermoplastics and thermosetting plastics?
Thermoplastics can be reshaped upon heating, while thermosetting plastics cannot.
Which polymer is commonly used for making plastic bags?
Polyethylene.
Fill in the blank: The process of creating a polymer by linking monomers together is called __________.
polymerization.
What characteristic of glass makes it useful for optical applications?
Transparency.
What is one advantage of using ceramics in construction?
They are fire-resistant.
What is a common property of polymers?
They are lightweight and flexible.
Fill in the blank: __________ are materials that can be molded into different shapes when heated.
Plastics.
What type of glass is often used in windows due to its clarity?
Soda-lime glass.
True or False: Ceramics can be used in electrical insulators.
True.
What is the role of additives in glass production?
Additives can enhance properties like color, strength, and durability.
What is the process of cooling glass to prevent crystallization called?
Quenching.
