Amorphous materials

What is the main difference between amorphous and crystalline materials?

• Amorphous materials have a random atomic arrangement, while crystalline materials have a repeating lattice structure. 

• Amorphous materials are more resistant to corrosion than crystalline materials

• Amorphous materials are transparent, while crystalline materials are opaque.

• None of the above

What is one way to create amorphous materials?

• By heating a material to a high temperature

• By allowing a material to cool slowly

• By rapidly cooling a molten material 

• None of the above

In which fields are amorphous materials commonly used?

• Medicine and biology

• Electronics, optics, and construction 

• Agriculture and farming.

• NOA

What gives glass its unique properties?

• Its ability to conduct electricity

• Its resistance to mechanical stress

• Its long-range order in its atomic structure

• Its lack of long-range order in its atomic structure 

How is glass typically made?

• By carving it out of a solid block of material

• By pouring a liquid material into a mold

• By melting a mixture of silica, soda, and lime at high temperatures and then rapidly cooling it

• By heating a mixture of sand and water

What is the main difference between amorphous and crystalline materials?

• Crystalline materials have a smooth, polished surface, while amorphous materials do not.

• Crystalline materials have a long-range order in their atomic structure, while amorphous materials lack this order.

• Amorphous materials are typically made by pouring a liquid material into a mold, while crystalline materials are not.

• NOA

What are some of the unique properties of glass?

• Low hardness and high susceptibility to chemical attack

• High electrical conductivity and low melting point

• High hardness, resistance to chemical attack, and the ability to transmit light

• Low density and low mechanical strength

What are the raw materials used in glass production?

• Silica, soda ash, limestone, and cullet

• Iron, aluminum, copper, and zinc

• Wood, plastic, paper, and rubber

• Water, salt, sugar, and flour

What is the process of preparing the raw materials for glass production?

• They are melted in a pot furnace or a tank furnace

• They are ground into a fine powder and mixed in correct proportions

• They are collected separately and then used as it is

• They are heated to a high temperature to remove impurities

What is a batch or frit in glass production?

• A uniform mixture of raw materials, cullet, and decolourisers

• A type of furnace used to melt glass

• A pool of glass formed in the heart of a tank furnace

• A crucible made of selected clay or platinum