wHAT are polycrystalline solids.? Give any two examples

Q: What is the difference between a network solid and anionic solid?

A: Solution-  Ionic solids—formed by positive and negative ions and electrostatic attractions and held…

Q: What do amorphous forms of graphite include?

A: What do amorphous forms of graphite include has to be given.

Q: What are Liquid Crystals?

A: The solid material whose atoms are arranged in a definite order giving the formation of a lattice…

Q: In the process of doping a semiconductor, certain impurities are added to increase the electrical…

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Q: a) Solid materials may exist in the crystalline form, either as a single crystal or a…

A: Crystalline material -  A crystalline material is that material in which the atoms are situated in a…

Q: Which one below is true for polymers? Density of crystalline polymer is less than that of amorphous…

A: Given statement is :  Which one below is true for polymers ?  a). Density of crystalline polymer is…

Q: How are the properties of high-tech ceramics the same as those of traditional clay ceramics, and how…

A: Ceramics can be found all around us, and they are often manufactured by moulding clay, earthy…

Q: What is a polymer? What is the difference between a polymer and a copolymer?

A: Polymer is a type of natural or synthetic substance which is composed of large number of…

Q: This refers to copolymer type whose arrangement of particles is  A-A-A-A-B-B-B-B ...

A: Copolymer type whose arrangement of particles is---   A-A-A-A-B-B-B-B ...

Q: (b) Sketch the salient features of diamond structure

A: Structure of diamond: The element present in diamond is carbon

Q: A material that has the ability to stretch a great deal and then return to its original dimensions…

A: In material science and physics, elasticity is the ability of a material to resist a distorting…

Q: What is coal liquefaction?

A: Coal liquefaction has to be given below.

Q: Shown here are cartoons of two different polymers. Whichof these polymers would you expect to be…

A: Intermolecular forces between the polymer chains hold the chains together in the ordered crystalline…

Q: 1 Describe the different types of defects present in ionic solids. use diagrams to illustrate.

A: Schottky defect: Same number of positive and negative ions are missing from their respective…

Q: Polyacetylene is an addition polymer with the structure shown here. Draw the structure of the…

A: The polymers are additions of many monomers and they have various properties in them. There are two…

Q: What evidence supports the notion that buckyballs are actualmolecules and not extended materials?(a)…

A: Buckyball is also known as C60. It is an allotrope of the carbon and called as Buckminster…

Q: The presence of __________ in motor oils allows them to have temperature-dependent viscosities.

A: Dry lubricante such as graphite, molybdenum disulfide and tungsten disulfide allow them to have…

Q: One of the critical properties of polymers is elasticity. The ability of many polymeric materials to…

A: Crystallinity  means the degree of structural order in a solid. The atoms are arranged in a regular…

Q: The experiment of reduction of cyclohexane states that there is formation of two layers. What is the…

A: Interpretation - To tell about the reason for the sepration of layers when the experiment of…

Q: The following type of structure is called what?

A:

Q: a. Compute the densities of totally crystalline and totally amorphous polyethylene terephthalate. b.…

A: Step : 1             The answer for the following questions.

Q: What is the difference between a crystal system and a mineral group?

A:

Q: what would be a micro structure of a polypropylene? also please explain why this would be the case.

A: Polypropylene A type of polypropylene is polypropylene, also known as polypropene. A thermoplastic…

Q: At room temperature, the edge length of the cubic unit cell in elemental silicon is 5.431 Å, and the…

A: The crystal lattice is a definite ordered structure. A lattice is an arrangement of particles in a…

Q: Liquid crystals have unusual optical properties because they can orientation. with an electric field…

A: The solution is given below-

Q: What is the definition of a ceramic?

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Q: (a) What is a monomer? (b) Which of these molecules canbe used as a monomer: ethanol, ethene (also…

A: A monomer is the molecules by which a polymer is constructed by the process of polymerization. In…

Q: b) How many tetrahedral and octahedral interstitial sites are there per hcp unit cell? Explain your…

A: A regular arrangement of constituent particles in three dimensional space is call space lattice and…

Q: t is the difference between a monomer and a polymer?

A: Monomers and polymers are  two different things related to the same molecules. For example in…

Q: How are the properties of high-tech ceramics the same asthose of traditional clay ceramics, and how…

A: Ceramics are nonmetallic, inorganic materials that get permanently hardened on heating.  Traditional…

Q: Do higher molecular weight polymers have a higher elastic modulus? Give a reason why this is/is not…

A: An elastic modulus can be defined as the amount of resistance a substance would put to stop getting…

Q: Q3:- What are the types of defects in crystalline structure? Explain with example and with any kind…

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Q: Explain the packaging listed below: - Compact cubic structure; - compact packaging(HCP) - Cubic -…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: What is a polymorph?

A: Polymorphism is the concept of Material Science which is about the ability of a solid material…

Q: The following structure represents a monomer. H C = C CI CH, a. Deduce the chemical name of the…

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Q: Polymorphism can exist in any crystalline material, not just molecular solids. True or false?…

A: Crystalline solids are those where a long-range order is present in the arrangement of constituent…

Q: What are the most common types of polymorphism in crystals?

A:

Q: Why polycrystalline form of a material is stable than single crystalline form?

A: All matter can be classified as solid, liquid, and gases mainly. In these physical states of matter,…

Q: (iii) Explain what packaging density is. Calculate the packaging density of the FCC and BCC…

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Q: ng your own words explain why ceramics are stronger and stiffer than polymers

A: Polymers can be defined as a large macromolecule made up from large number of monomers

Q: (a) Consider the polymerization of isoprene (see below for the formula): Draw the chemical structure…

A: The polymerisation of isoprene involves different radical formations which gives a different type of…

Types of Polymers on the basis of Method of Preparation