Physical Science Ch 5 Cont. Question Preview (ID: 2763)
The Structure Of Motion.
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When two atoms bond, the positive nucleus of one atom attracts the negative _____________ of another.
a) electron
b) proton
c) neutron
d) positron
The structural formula for a water molecule is
a) HO2
b) HO
c) H2O
d) C6H12O6
When two chlorine atoms bond, they ____________ a pair of electrons
a) share
b) steal
c) bond
d) want
A(n) _________ bond is formed when atoms share pairs of electrons
a) ionic
b) metallic
c) hydrogen
d) covalent
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
A compound consisting of Cr +3 ions and OH- ions whould be named
a) chromium hydroxide
b) chromium (III) hydroxide
c) chromium oxide
d) chromium (III) hydrogen oxygen
The chemical formula for the ionic comound consisting of oxide ions and nickel (III) ions is
a) NiO
b) ONi
c) O3Ni2
d) Ni2O3
A compound's ___________ formula tells you how many atoms of each type are in one molecule.
a) emperical
b) chemcial
c) molecular
d) structural
A(n) ___________ is a polymer made of bonded amino acids.
a) proteins
b) carbohydrates
c) DNA
d) asprin
The chemical structure of a compound affects its properties by
a) ions in solid ionic compounds have high melting points cause of their structure
b) strong structures have high melting points
c) none of the choices
d) 2 of the choices
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