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Ch. 6 Test Review
Ch. 6 Test Review
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Answers
1
Which of the following pH levels would be considered the most acidic?
2
12
None of the above
7
2
Which four
elements
are found in the greatest amount in living things?
Hydrogen, Water, Carbon, and Helium
Hydrogen, Oxygen, Nitrogen, Carbon
Carbon, Oxygen, Water, and Calcium
Oxygen, Water, Carbon dioxide, and Calcium
3
Which of the options below is an enzyme?
Hydrogen peroxide
Water
Lactose
Lactase
4
The formula (CH
2
O)
n
is used to represent _________________________.
Carbohydrates
Lipids
Nucleic acid
Protein
5
______________ chemistry is the branch of chemistry devoted to understanding __________-based molecules.
Inorganic ; carbon
Organic ; carbon
Organic ; oxygen
Biological ; nitrogen
6
Fats and oils are classified as __________________________.
Proteins
Lipids
Carbohydrates
Nucleic acids
7
Which of the following statements is true about Carbon-14?
Carbon-14 has 6 protons and 8 neutrons
Carbon-14 is an isotope
All of the above
Carbon-14has a half-life of 5730 years
8
6CO
2
+ 6 H
2
O --------> C
6
H
12
O
6
+ 6O
2
. How many
TOTAL
Oxygen atoms are in the
product
?
8
18
36
12
9
The ________________________ of nucleic acids are known as ________________________
polymers ; simple sugars
monomers ; fatty acids
polymers ; amino acids
monomers; nucleotides
10
What type of charge do an atom’s electrons have?
Negative
Neutral
No charge
Positive
11
Which of the following is true about carbon monoxide and carbon dioxide?
Carbon monoxide and carbon dioxide have the same number of atoms
All of the above
Carbon monoxide and carbon dioxide are the same compound
Carbon monoxide and carbon dioxide differ in chemical & physical properties
12
If one proton were removed from an atom, it would become
A compound
A new element
An ion
An isotope
