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Chemical Bonding 2
Test Description: Ch.22 Chemical Bonding
Instructions: Answer all questions to get your test result.
1) A polymer of sugar molecules is called a ?
A
amino acid
B
Protein
C
carbohydrate
D
DNA
2) The forces that hold different atoms or ions together are ?
A
nuclear forces
B
electric currents
C
chemical bonds
D
physical bonds
3) Each molecule of table sugar C12H22O11 contains
A
12 atoms of cabon
B
19 atoms of carbon
C
0 atoms of carbon
D
1 atom of carbon
4) Gases take up a lot of space because gas molecules
A
are not attracted to on another
B
have weak chemical bonds
C
have small molar mass
D
contain very few atoms
5) Covalent bonds are formed between
A
metal atoms
B
non metals
C
compounds
D
ions
6) 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
7) The simplest organic compound is
A
methane
B
table sugar
C
aspirin
D
salt
8) Polymers are large organic molecules that are made of
A
anions
B
repeating units
C
cations
D
carbon and oxygen only
9) Atoms often join so that each atom will have
A
an equal number of protons and electrons
B
an outermost energy level that is full of electrons
C
more electrons than either protons or neutrons
D
an even number of electrons
10) An oxidation number tells how many __________ an atom must gain, lose or share to become stable.
A
neutrons
B
supertrons
C
electrons
D
protons
*select an answer for all questions
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