(a). Graphite and diamond are both made from carbon atoms. Kedua-dua grafit dan intan adalah diperbuat dari atom-atom karbon. (). List TWO physical characteristic of each material. Senaraikan DUA sifat-sifat fizikal bagi kedua-dua bahan tersebut (i) Give ONE application for graphite and ONE for diamond Berikan SATU penggunaan bagi grafit dan SATU penggunaan bagi intan (ii). If both materials are made of carbon, why does such a difference in properties exist? Jika kedua-dua bahan tersebut diperbuat daripada karbon. jelaskan kenapa perbezaan ke atas sifat-sifat ini wujud?

You are given the density of a metal as 2.07 g/cm³. You are advised the crystallographic structure is fcc, and the atomic mass is 25.5 g/mol. What is the atomic radius of the metal? a. 0.15 nm b. 0.12 nm c. 0.11 nm d. 0.18 nm

a. Calculate the average density of aluminum bronze (95% Cu, 5% Al) Density of Cu and Al are 8.94 gm/cm and 2.7 gm/cm', respectively. b. Calculate the average density of nickel bronze (60% Cu, 20% Ni, 20% Zn) Density of Ni and Zn are 8.91 gm/cm³ and 7.14 gm/cm³, respectively.

Silica gels are a form of SiO2 characterized by: (This question has more than one correct answer) a. Crystalline lattice b. High internal surface area c. Presence of OH ions d. Can be used as a catalyst support

Project 4: a) Discuss the properties that related to FCC metals and compare it with SC and BCC structure. b) Compare between simple cubic cell (SC), body-centred cubic cell (BCC), face-centred cubic cell (FCC) and hexagonal close-packed cell (HCP) from all aspect Such as; the relation between a and R, and give some examples for each of them. c) Make a prototype for each one of them.

1. Is there a difference in packing (coordination number) between these two types (FCC and HCP) of structures?   2. Look at the two structures. A small difference in arrangement of atoms causes a dramatic difference in the properties of FCC ductile metals and HCP brittle metals. Can you see it? Try to draw the differences (You can draw the 3-layers separately):

Which of the following have the same periodicity as the crystal lattice: a) electron wave function, b) electron distribution probability, c) lattice potential

Clear my choice Question 5 Iron (II) oxide (FeO) is a ceramic that has the same crystal structure as NaCi. Not yet answered Given: Marked out of R(Fe2*)= 0.087 nm and R(O2)=0.132 14.00 Calculate the lonic Packing Factor (IPF) of FeO? F Flag question Select one: O a. 0.14 O b. 0.12 Oc 0.74 O d. 0.21 O e. 0.51 O f.0.47 g 0.59 D.0.41

(a)  At the atomic level, how deformation process occurs/proceeds?  (b)  If we have the same materials in two different forms as a single crystal and as a polycrystalline sample, which one would have higher internal energy?  Why? (c)  Determine miller indices for the plane shown in red.  Show your work to clarify how you came up with your answer.

A metal has a certain fraction f = 105 of vacancies at the atomic level at finite temperatures. If the activation energy for vacancy formation was increased by 50%, what would be the new vacancy concentration? Select one: a. 7.43E-10 b. 6.22 E-5 C. 1.24E-6 O d. 3.16E-8 e. 5.48E-4