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