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