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