Science 6 Chapter 3 Test Set B Question Preview (ID: 39352)
Atoms And Chemical Bonding.
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Ionic compounds that dissolve in water conduct electricity because what are able to move freely?
a) electrons
b) ions
c) molecules
d) crystals
Solid metals are good conductors of heat and
a) electricity
b) energy
c) luster
d) ductility
Molecular compounds that dissolve in water do not conduct electricity because there are no _________ present.
a) charged particles
b) protons
c) electrons
d) atoms
Because the electrons in hydrogen fluoride are pulled more strongly by the flourine atom, we say that the molecule is
a) nonpolar
b) polar
c) double bonded
d) triple bonded
A metal crystal consists of positively charged metal ions embedded in a sea of freely moving
a) anions
b) cations
c) valence electrons
d) protons
The properties of metals can be explained by the structure of and the bonding between metal atoms
a) True
b) False
c)
d)
Orderly crystal shapes, high melting points, and electrical conductivity when dissolved in water are properties of ionic compounds.
a) True
b) False
c)
d)
When electrons are transferred between two atoms, a covalent bond is formed.
a) True
b) False
c)
d)
A low melting point is one property of molecular compounds.
a) True
b) False
c)
d)
A nonpolar bond is formed when two atoms share electrons unequally.
a) True
b) False
c)
d)
Carbon dioxide is an ionic compound.
a) True
b) False
c)
d)
Dihydrogen monoxide is another name for water.
a) True
b) False
c)
d)
Molecular compounds have shiny luster.
a) True
b) False
c)
d)
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