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Chemistry Unit 5 Notes 5
Test Description: Rjrjfndj
Instructions: Answer all questions to get your test result.
1) Metallic bonding:
A
Some metal atoms replaced by others of similar size
B
The chemical bonding that results from the attraction between metal ators and the surrounding sea of electrons
2) Vacant p and d orbitals in metal's outer energy levels overlap, and allow outer electrons to roam freely. They are delocalized - move freely about the empty atomic orbitals
A
True
B
False
3) Model: Packing uniform, hard spheres to best use available space. This is called closest packing. Each atom has 12 nearest neighbors.
A
False
B
True
4) •Interstitial Alloy: Interstices (holes) Carbon in closest packed metal structure are occupied by small atoms.
A
False
B
True
5) Metals are good , conductors of heat and electricity
A
True
B
False
6) Metals are malleable
A
True
B
False
7) Metals are ductile
A
True
B
False
8) Metals have high tensile strength
A
False
B
True
9) Metals have high luster
A
True
B
False
10) Substitutional Alloy:
A
some metal atoms replaced by others of similar size.
11) Properties of Substances with Metallic, lonic, and Covalent Bonds
A
Metallic,lonic,Covalent, Potassium, chloride,Chlorine
B
Ndjdnendd
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