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Section 7.1 And 7.2
Test Description: Section 7.1 and 7.2
Instructions: Answer all questions to get your test result.
1) A mixture containing tiny suspended clumps or particles is a ?
A
pure substance
B
solution
C
compound
D
colloid
2) If molecules of two substances in a mixture are uniformly mixed, the mixture is a ?
A
colloid
B
solution
C
pure substance
D
compound
3) A molecule that has opposite partial charges on opposite ends of the molecule is a(n) ? molecule
A
ionic
B
nonpolar
C
covalent
D
polar
4) How many individual electrons are shared in a double bond?
A
3
B
2
C
1
D
4
5) All of the following are covalent network substances except ?
A
diamond
B
water
C
quartz
D
graphite
6) A diagram showing the locations of all the atoms and valence electrons in a compound is a ?
A
Lewis structure
B
CGI drawing
C
Chemical diagram
D
Bohr drawing
7) Molecules with the same number and types of atoms but different arrangements of atoms are ?
A
isotopes
B
isomers
C
precipitates
D
solutions
8) A substance that dissolves to form a solution is the ?
A
solution
B
solvent
C
salutation
D
solute
9) Pure substances that are physically mixed but not chemically united form a ?
A
isomer
B
delocalization
C
solution
D
mixture
10) The simplest ratio of atoms in a covalent network is the ?
A
1:1
B
formula unit
C
2:1
D
unit of ratio
*select an answer for all questions
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