What are some of the structural differences between quartz and amorphous SiO2?

Q: Which of the following alloys does not contain copper?           (A) Bronze          (B) Pewter…

A: Bronze = copper + tin  Pewter = Tin + antimony + copper  Sterling silver = silver + usually copper

Q: >Why does BN form compounds similar to those formed by elemental carbon?

A: The boron nitride consists of BN units, which have same number of electrons (isoelectronic) as that…

Q: What are the Silicate Ceramics? Give some examples? What are the uses of Silicate Ceramics?

A: Silicates are materials composed generally of silicon and oxygen. They were the first ceramics…

Q: Define the term Interstitial alloys?

A: Alloy is a mixture of more than one metal which has superior properties than any individual metal.…

Q: Explain how homogeneous and heterogeneous alloys differ. Describe the differences between…

A: An alloy is a uniform mixture. It is made up of two or more chemical elements, of which at least one…

Q: What is the difference between the hardening process of Portland cement and the hardening process of…

A: Portland cement is a powdered mixture, and its hardening process is different from that of clays.…

Q: What are Nonoxide Ceramics?

A: Ceramics are minerals which are non-metallic and inorganic in nature. It has huge variety, like…

Q: Th e elements Cu, O, La, Y, Ba, Tl, and Bi are all found in high-temperature ceramic…

A: The atomic number of Cu is 29. hence the below shorthand noble gas configuration of Cu ( note : Cu…

Q: What are Oxide Ceramics? Give some examples?

A: INTRODUCTION: Oxide ceramics are the ceramics that are non-metallic mineral materials.

Q: What are some advantages and disadvantages of vitreous silica and soda-lime glass?

A: Vitreous silica is made from silica which is converted to glass. Soda lime in addition of silica…

Q: List the major classes of minerals and discuss the main chemical characteristic of each class.

A: Minerals are classified based on their chemical constitution. Mineral resources are finite and…

Q: What do granite and basalt have in common?

A: Granite and Basalt are two of the major rocks found in the earth crust.

Q: Discuss the need for a high-Tc superconductor.

A: High-Tc superconductor stands for high temperature superconductor. The materials that behave as a…

Q: ry rock 6. What type of sedimentary rock is fossiliferous limeston A. Clastic sedimentary rock B.…

A: 1) Clastic sedimentary rocks are rocks composed of fragments or clasts of pre - existing mineral and…

Q: What is vitreous silica or fused silica?

A: Silica is silicon dioxide which is hard, brittle and it is used for making glasses.

Q: Describe what happens on the molecular level when silica is heated and then cooled to make glass.

A: The general formula of silica is SiO2 which melts on heating above 1500oC.

Q: Name the three (3) unit cells commonly found in metal structures and briefly explain the method of…

A: Unit cell is the repeating unit of a lattice. It has net symmetry that a crystal possesses. Due to…

Q: What are the applications of superconductors?

A: Superconductivity:The ability of certain metals and their compounds, alloys to conduct the…

Q: Describe the mechanism by which cement hardens when water is added.

A: Cement is binder substance used in construction of buildings. It is generally gray color substance.

Q: What is the composition, in atom percent, of an alloy that consists of 92.5 wt% Ag and 7.5 wt% Cu?…

A: Composition of silver is:

Q: How can you separate alumina (Al2O3) from silica present in bauxite ore? Write the chemical…

A: Filtering of aluminum from bauxite: Finely powdered bauxite metal is processed with a watery…

Q: How do atomic radius ratios relate to strength in alloys?

A: The smaller the atomic radius, the more influence the nucleus has on reactivity. Since the nucleus…

Q: What are silicates? What is quartz?

A:

Q: Calculate the density of aluminum, given that it has an fcc crystal structure,an atomic radius of…

A: Firstly, calculate the edge length. For FCC, the relation between the radius and edge length (a) is:…

Q: Which of the following acids would be capable of reacting with a silicate (SiO2) mineral? A) HF B)…

A: silicon dioxide generally Known as silicate not easily reactive with acids in normal conditions but…

Q: What names are given to SiO2 when it exists in the following two solid-state forms? Amorphous Solid…

A: The correct answer about SiO2 is given below

Q: which of the following minerals would crystallize early from a cooling silicate magma ? biotite,…

A: Sequence of minerals crystallizing from magma is called Bowen reaction series.

Q: Tin is extracted from its ore cassiterite, SnO2 by reaction with carbon from coal. Write a balanced…

A: First, write the balanced equation for the extraction of tin from cassiterite. The reaction can be…

Q: a) Calculate the composition, in weight percent, of an alloy that contains 218.0 kg titanium, 14.6…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Describe the difference between vitreous silica and soda-lime glass. What are some advantages and…

A: Vitreous silica is made from silica which is converted to glass. Soda lime in addition of silica…

Q: What are Non=Oxide-Ceramic? Give some examples?

A: Non-Oxide Ceramic Non-oxide ceramics are specialized Ceramics that are classed as inorganic,…

Q: What is the coordination number of the crystal structure shown below? O A. 4 В. 8 O C. 10 O D. 12

A: The crystal structure is FCC ( Face cubic cell ) it is unit cell having atoms in all the corners and…

Q: What are the unit chemical formulas of silicate tetrahehras for island silicate structures,…

A: Silicates are rock-forming minerals, which are made up of silicate groups. They are about 90% of…

Q: 5. What is the composition, in atom percent, of an alloy that consists of 30 wt% Zn and 70 wt% Cu?

A:

Q: What is the main component of glass?a) Al2O3 b) SiO2 c) CaF2 d) SiC

A:

Q: Draw a Lewis electron-dot diagram for the cyclosilicate ion (Si,O), which forms part of the…

A: In the Si6O1812- molecule, the oxygen ring present in the center of the unit. Here all oxygen atoms…

Q: 4.14 What is the composition, in atom percent, of an O alloy that consists of 5.5 wt% Pb and 94.5…

A: 4.14 Weight % of Pb = 5.5 %Weight % of Sn = 94.5 %The atomic weight of Pb is 207.2 a.m.uThe atomic…

Q: silicon

A: Pure semiconductor have high resistance power so that it's conduct less electricity this is due to…