Select the correct answer Which group of materials does porc

Select the correct answer. Which group of materials does porcelain belong to? Metallic Ceramics Plastics Electronic Which group of materials does concrete belong to? Metallic Ceramics Plastics Electronic Structural dements which can be seen with the naked eye are considered? Macroscopic Microscopic Sub Atomic Atomic The reason an aluminium oxide disc might be transparent is because it is constructed from: small single crystals that are all connected. small interconnected crystals. a single crystal, that is it is highly perfect. All of the above. Which of the group of materials below are high technology materials? Polymers Ceramics Semiconductors Metals Which of the following is true for metals? They are very dense compared to ceramics and polymers. The atoms are organized in an orderly manner. They have a large number of non-localized electrons which are not bound to any particular atom. All of the above. Which of the following is not a properly of ceramics? Ductile Very hard Resistant to high temperatures Insulate against electrical conduct.

Solution

1-b:Porcelain is a ceramic material made by heating clay-type materials to high temperatures. It includes clay in the form of kaolinite

2-b:Concrete is a ceramic composite made up of water, sand, gravel, crushed stone, and cement

3-a

4-a:ALON® or Aluminum Oxynitride is an amazing and unique transparent advanced ceramic that is polycrystalline (made from powder) with a cubic spinel crystal structure

5-b

6-c

7-a