Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
Related questions
Question
Q5-Define: mole, electropositive element, polymorphism, Anisotropy, Heisenberg's uncertainty principle.
Transcribed Image Text:All Questions cover S.L.O.I in ABET
QI- Describe the enabling materials property of each of the following and why it is so:
(a) aluminum for airplane bodies.
b) nickel chromium for heating elements
Q2- a) Compare and contrast metallic and covalent primary bonds and give one example in each
bond.
b) What type of bonding does KCI have? Fully explain your reasoning by referring to the
electronic structure and electronic properties of each element.
Q3- For the following elements : a) Mg, with Z = 12 b) S, with Z= 16
1- write electronic configuration
2- determine number of electrons in valance band
3- determine whether element is electropositive or electronegative element.
Q4- The density of potassium, which has the BCC structure, is 0.855 g /cm^3. The atomic
weight
of potassium is 39.09 g /mol. (Avogadro number = 6.0221408x10^23 ) Calculate
(a) the lattice parameter; and
(b) the atomic radius of potassium.
Q5- Define: mole, electropositive element, polymorphism, Anisotropy, Heisenberg's uncertainty
principle.
Q6 - Assuming that all of the valence electrons contribute to current flow, (a) calculate
the mobility of an electron in copper and (b) calculate the average drift velocity for
electrons in a 100 cm copper wire when 10 V are applied. Given( The lattice parameter of copper
is
3.6151 10-", copper is FCC, o = 5.89 x 105)
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