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Physical Science Ch 5 Cont.
Test Description: The Structure of Motion
Instructions: Answer all questions to get your test result.
1) When two atoms bond, the positive nucleus of one atom attracts the negative _____________ of another.
A
electron
B
positron
C
proton
D
neutron
2) The structural formula for a water molecule is
A
HO
B
H2O
C
C6H12O6
D
HO2
3) When two chlorine atoms bond, they ____________ a pair of electrons
A
share
B
want
C
steal
D
bond
4) A(n) _________ bond is formed when atoms share pairs of electrons
A
hydrogen
B
metallic
C
ionic
D
covalent
5) Because polyatomic ions are made of covalently bonded atoms that have either gained or lost electrons, they behave like simple
A
molecules
B
ions
C
pairs
D
compounds
6) A compound consisting of Cr +3 ions and OH- ions whould be named
A
chromium oxide
B
chromium hydroxide
C
chromium (III) hydroxide
D
chromium (III) hydrogen oxygen
7) The chemical formula for the ionic comound consisting of oxide ions and nickel (III) ions is
A
NiO
B
ONi
C
Ni2O3
D
O3Ni2
8) A compound's ___________ formula tells you how many atoms of each type are in one molecule.
A
emperical
B
chemcial
C
structural
D
molecular
9) A(n) ___________ is a polymer made of bonded amino acids.
A
asprin
B
DNA
C
carbohydrates
D
proteins
10) The chemical structure of a compound affects its properties by
A
strong structures have high melting points
B
2 of the choices
C
none of the choices
D
ions in solid ionic compounds have high melting points cause of their structure
*select an answer for all questions
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