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