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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
Protein
B
amino acid
C
DNA
D
carbohydrate
2) The forces that hold different atoms or ions together are ?
A
electric currents
B
chemical bonds
C
physical bonds
D
nuclear forces
3) Each molecule of table sugar C12H22O11 contains
A
19 atoms of carbon
B
1 atom of carbon
C
0 atoms of carbon
D
12 atoms of cabon
4) Gases take up a lot of space because gas molecules
A
have weak chemical bonds
B
contain very few atoms
C
have small molar mass
D
are not attracted to on another
5) Covalent bonds are formed between
A
non metals
B
metal atoms
C
ions
D
compounds
6) Copper is a good conductor of electricity because its electrons
A
can move from atom to atom
B
are positively charged
C
have a 2- charge
D
are repelled by protons
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
cations
B
carbon and oxygen only
C
anions
D
repeating units
9) Atoms often join so that each atom will have
A
an equal number of protons and electrons
B
an even number of 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
protons
B
supertrons
C
electrons
D
neutrons
*select an answer for all questions
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