WorksheetsChemistry Test Review
Total questions: 50
Worksheet time: 21mins
Name
Class
Date
1.
Which of the following has essentially no mass?
a)
protons
b)
neutrons
c)
electrons
d)
ions
2.
Which subatomic particle is labeled "b"?
a)
proton
b)
neutron
c)
electron
d)
ion
3.
A solution with a pH of 6 would be classified as a
a)
weak acid
b)
strong acid
c)
weak base
d)
strong base
4.
An atom that has lost an electron becomes a(n)
a)
positively charged ion
b)
negatively charged ion
c)
isotope
d)
different element
5.
Which of the following is different between two isotopes?
a)
atomic number
b)
# of protons
c)
# of electrons
d)
# of neutrons
6.
Which type of bond is being depicted below?
a)
covalent bond
b)
ionic bond
c)
hydrogen bond
d)
peptide bond
7.
Water is _______ dense as a solid than as a liquid. This means that ice will _____ in water.
a)
less; float
b)
less; sink
c)
more; float
d)
more; sink
8.
How many valence electrons would the atom below contain?
a)
1
b)
2
c)
3
d)
8
9.
Carbon-12 and Carbon-14 are both carbon. They have different atomic weights. What do we call Carbon-12 and Carbon-14?
a)
isotopes
b)
ions
c)
compounds
d)
molecules
10.
Which subatomic particle is labeled "a"?
a)
proton
b)
neutron
c)
electron
d)
ion
11.
Pure water has a neutral pH. Therefore, the pH of this water would be
a)
1
b)
6
c)
7
d)
8
12.
Which bond results when electrons are shared between two atoms?
a)
covalent bond
b)
ionic bond
c)
hydrogen bond
d)
peptide bond
13.
What does it mean when we say an atom is "stable"?
a)
It has the same # of protons as the # of neutrons
b)
It has the same # of protons as the # of electrons
c)
It will form bonds with other atoms readily.
d)
The valence shell of the atom is full.
14.
How many protons does the element below have?
a)
11
b)
12
c)
22.99
d)
23
15.
A solution with a pH of 1 would be considered a
a)
weak acid
b)
strong acid
c)
weak base
d)
strong base
16.
Why do atoms form bonds with other atoms?
a)
in an effort to become stable
b)
in an effort to become an ion
c)
in an effort to become neutral
d)
in an effort to become an isotope
17.
If you add NaOH (a base) to water, the amount of ______ ions will increase in the solution.
a)
H-
b)
H+
c)
OH-
d)
OH+
18.
Which water property is being shown in the diagram below?
a)
Capillary action
b)
Adhesion
c)
Cohesion
d)
Universal solvent
19.
Because water is really good at dissolving most substances, we call water
a)
polar.
b)
a dense substance.
c)
something that has a high heat capacity.
d)
the universal solvent.
20.
A solution with a pH of 3 is _______ times more acidic than a solution with a pH of 6.
a)
2
b)
3
c)
100
d)
1000
21.
Which water property is the reason why water travels upward in plants from the roots to the leaves?
a)
cohesion
b)
adhesion
c)
high heat capacity
d)
low density as a solid
22.
An atom with a charge is a(n)
a)
isotope
b)
ion
c)
electron
d)
neutral atom
23.
Which of the following would contain the highest concentration of H+ ions in solution?
a)
Solution with pH of 0
b)
Solution with pH of 1
c)
Solution with pH of 7
d)
Solution with pH of 14
24.
Which type of bond is depicted below?
a)
covalent bond
b)
ionic bond
c)
hydrogen bond
d)
peptide bond
25.
A solution of pH 9 has ____ times more ______ than a solution of pH 7.
a)
2; H+
b)
2; OH-
c)
100; H+
d)
100; OH-
26.
Which two subatomic particles make up the atomic weight of an atom?
a)
protons & electrons
b)
protons & neutrons
c)
electrons & neutrons
d)
electrons & ions
27.
Water is polar. Because of this property, water molecules stick to one another to form droplets. Which property is this?
a)
cohesion
b)
adhesion
c)
capillary action
d)
density
28.
How many electrons would be in the atom below?
a)
9
b)
10
c)
19
d)
28
29.
Which letter represents the enzyme-substrate complex?
a)
A
b)
B
c)
C
d)
E
30.
When an enzyme changes shape due an extreme temperature change, this is called
a)
denaturation
b)
competitive inhibitor
c)
coenzyme
d)
activation energy
31.
An enzyme binds to its substrate at the
a)
activation energy site
b)
enzyme-substrate complex
c)
coenzyme
d)
active site
32.
An enzyme works by
a)
slowing down chemical reactions
b)
raising the activation energy
c)
lowering the activation energy
d)
decreasing the kinetic energy
33.
A substance like penicillin, which blocks an enzyme's active site, is called a
a)
competitive inhibitor
b)
coenzyme
c)
non-competitive inhibitor
d)
denaturation
34.
An organic molecule which binds to an enzyme and carries chemical groups or electrons with it is called a(n)
a)
competitive inhibitor
b)
non-competitive inhibitor
c)
coenzyme
d)
substrate
35.
Which of the following is NOT true regarding enzymes?
a)
Enzymes can be used over and over again.
b)
Enzymes can be used on many different types of substrates
c)
Many enzymes end in -ase
d)
All enzymes are proteins
36.
Which of the following is the enzyme in the equation?
a)
H2O2
b)
catalase
c)
H2O and O2
d)
none of the above are enzymes
37.
Which of the following is/are the substrate(s) in the equation?
a)
H2O2
b)
catalase
c)
H2O and O2
d)
H2O2, H2O, and O2
38.
Which of the following statements is FALSE?
a)
Enzymes are at work in all systems of your body.
b)
Enzymes act as catalysts.
c)
All proteins are enzymes.
d)
Enzymes often end in -ase.
39.
What are the building blocks of proteins?
a)
monosaccharides
b)
amino acids
c)
glycerol
d)
fatty acids
40.
What is the ratio involved in all carbohydrates?
a)
2:1 Carbon to Hydrogen atoms
b)
2:1 Carbon to Oxygen atoms
c)
2:1 Hydrogen to Oxygen atoms
d)
2:1 Hydrogen to Carbon atoms
41.
What are the building blocks of carbohydrates?
a)
glycerol
b)
monosaccharides
c)
amino acids
d)
nucleotides
42.
Which elements are found in all lipids?
a)
C,H
b)
C,H,O
c)
C,H,O,N
d)
C,H,O,N,P,S
43.
Which of the following is NOT one of the functions of proteins?
a)
Enzymes are made of protein
b)
Antibodies are made of protein
c)
Proteins aid in transport of substances in cells
d)
Protein is the main source of energy
44.
What are the building blocks of lipids?
a)
glycerol & amino acids
b)
glycerol & fatty acids
c)
fatty acids & amino acids
d)
fatty acids & carboxyl groups
45.
Which elements are found in all carbohydrates?
a)
C,H,O
b)
C,H,O,N
c)
C,H,O,N,P
d)
C,H,O,N,P,S
46.
What are the building blocks of DNA molecules?
a)
fatty acids & glycerol
b)
amino acids & nucleic acids
c)
nucleic acids
d)
nucleotides
47.
What is the primary function of carbohydrates?
a)
provide energy
b)
provide structure & support
c)
main component of all cell membranes
d)
enzymes
48.
Which elements are found in all nucleic acids?
a)
C,H,O
b)
C,H,O,N
c)
C,H,O,N,P
d)
C,H,O,N,P,S
49.
Makes up our skin, hair, and nails.
a)
Carbohydrates
b)
Proteins
c)
Nucleic Acids
d)
Lipids
50.
These organic molecules are used by the body for long term storage of energy and make up the structure of cell membranes.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
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