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Science 6 Chapter 3 Test Set B
Test Description: Atoms and Chemical Bonding
Instructions: Answer all questions to get your test result.
1) Ionic compounds that dissolve in water conduct electricity because what are able to move freely?
A
crystals
B
ions
C
electrons
D
molecules
2) Solid metals are good conductors of heat and
A
ductility
B
luster
C
energy
D
electricity
3) Molecular compounds that dissolve in water do not conduct electricity because there are no _________ present.
A
atoms
B
charged particles
C
protons
D
electrons
4) Because the electrons in hydrogen fluoride are pulled more strongly by the flourine atom, we say that the molecule is
A
triple bonded
B
nonpolar
C
polar
D
double bonded
5) A metal crystal consists of positively charged metal ions embedded in a sea of freely moving
A
cations
B
anions
C
valence electrons
D
protons
6) The properties of metals can be explained by the structure of and the bonding between metal atoms
A
False
B
True
7) Orderly crystal shapes, high melting points, and electrical conductivity when dissolved in water are properties of ionic compounds.
A
True
B
False
8) When electrons are transferred between two atoms, a covalent bond is formed.
A
True
B
False
9) A low melting point is one property of molecular compounds.
A
True
B
False
10) A nonpolar bond is formed when two atoms share electrons unequally.
A
True
B
False
11) Carbon dioxide is an ionic compound.
A
True
B
False
12) Dihydrogen monoxide is another name for water.
A
False
B
True
13) Molecular compounds have shiny luster.
A
False
B
True
*select an answer for all questions
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