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Physical Science Ch 5
Test Description: The Structure of Matter
Instructions: Answer all questions to get your test result.
1) The forces that hold different atoms or ions together are
A
chemical bonds
B
nuclear forces
C
physical bonds
D
electric currents
2) Each molecule of table sugar C12H22O11 contains
A
1 atom of carbon
B
6 atoms of carbon
C
0 atoms of carbon
D
12 atoms of carbon
3) Cases take up a lot of space because gas molecules
A
have weak chemical bonds
B
have a small molar mass
C
contain very few atoms
D
are not attracted to one another
4) Covalent bonds are formed between
A
compounds
B
nonmetal atoms
C
ions
D
metal atoms
5) Copper is a good conductor of electricity because its electrons
A
have a 2- charge
B
are positively charged
C
can move from atom to atom
D
are repelled by protons
6) The name of dinitrogen tetroxide tells you that this compound contains
A
two N atoms and four O atoms
B
four N atom and four O atoms
C
four N atoms and two O atoms
D
two N atoms and two O atoms
7) When copper combines with oxygen to form copper (II) oxide, the charge of the copper ion is
A
Cu 3+
B
Cu 4+
C
Cu 2+
D
Cu 1+
8) It is possible for different covalent compounds to have the same emperical formula because empirical formulas represent
A
a ratio of atoms in the compound
B
only the cations in the compound
C
a total of all ionic bonds
D
a model of the compound
9) How many chemical bonds can carbon form with other atoms?
A
3
B
1
C
2
D
4
10) Alkanes are hydrocarbons that contain
A
carbon and oxygen only
B
carbon, hydrogen, and oxygen
C
single or double covalent bonds
D
single covalent bonds only
*select an answer for all questions
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