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WorksheetsCompetency 2 QUEST Review - Chemistry
Total questions: 83
Worksheet time: 54mins
Name
Class
Date
1.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
2.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
3.
How many are shared in a single bond?
a)
2 pairs
b)
4
c)
2
d)
1
4.
How are ionic bonds formed?
a)
When atoms share an electron
b)
When opposite charged atoms attract
c)
When one atom takes a proton
d)
When one atom takes a neutron
5.
Why do ionic bonds form?
a)
so the number of protons equals the number of electrons
b)
to fill the outermost energy level
c)
so an atom can become unstable
6.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
7.
What happens when the sodium atom loses an electron?
a)
It become negatively charged
b)
It become positively charged
c)
none
8.
What is the atomic number?
a)
number of protons
b)
number of neutrons
9.
What is the mass number?
a)
the number of protons
b)
the sum of the number of protons and the number of neutrons in the nucleus of an atom
10.
an electron has this charge
a)
positive
b)
negative
c)
neutral
11.
a neutron has this charge
a)
negative
b)
positive
c)
neutral
12.
a proton has this charge
a)
negative
b)
positive
c)
neutral
13.
atoms of the same element with different numbers of neutrons are...
a)
isotopes
b)
quarks
14.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
15.
A water strider can skate along the top of a pond because:
a)
covalent bonds result in water cohesion
b)
hydrogen bonds result in water cohesion (surface tension)
c)
water striders have adapted to take advantage of water cohesion
d)
low surface tension of water
16.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
17.
Why can water have no net charge but have slight charges in different parts of the molecule?
a)
The oxygen end is slightly negative and the hydrogen end is slightly positive
b)
The hydrogen end is slightly negative and the oxygen end is slightly positive
c)
The hydrogen and oxygen ends change in polarity
d)
Because it is hydrophobic
18.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
19.
What word describes when a molecule is attracted to water?
a)
hydrophobic
b)
hydrophilic
c)
bipolar
d)
solvent
20.
What is the range of pH values in an acidic solution?
a)
0-7
b)
7-14
c)
15-239058204958
d)
pH = 7
21.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
22.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
23.
pH greater than 7.
a)
Acids
b)
Bases
c)
All
24.
The pH scale is based off of the concentration of _________ ions.
a)
Oxygen
b)
Hydrogen
c)
Nitrogen
d)
None of the others
25.
What is a solution that has an excess of hydroxide (OH-) ions?
a)
pH
b)
acid
c)
neutral
d)
base
26.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
27.
Where does the energy from our food originally come from?
a)
the Sun
b)
chemical reactions
c)
carbohydrates
d)
mitochondria
28.
Which macromolecule is made of simple and complex sugars?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
29.
Which macromolecule stores energy, insulates us, and makes up the cell membrane?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
30.
Which are enzymes?
a)
simple carbohydrates
b)
proteins that speed up chemical reactions
c)
lipids that make up the cell membrane
d)
a building block of DNA
31.
This is one job proteins do NOT have in the body
a)
storing genetic information
b)
structure
c)
speed up chemical reactions
d)
transport things through cell membrane
32.
DNA and RNA are examples of...
a)
proteins
b)
nucleic acids
c)
carbohydrates
d)
lipids
33.
Another name for fats and oils
a)
proteins
b)
sugar
c)
lipids
d)
nucleic acids
34.
Which organelle breaks down sugar into something our cells can use? (ATP)
a)
cell membrane
b)
mitochondria
c)
Golgi body
d)
endoplasmic reticulum
35.
Phospholipids are used in what biological structure?
a)
RNA
b)
DNA
c)
Cell membrane
d)
Cell wall
36.
What is the monomer of nucleic acids?
a)
Glycerol
b)
Monosaccharides
c)
Amino Acids
d)
Nucleotides
37.
What is the function of a carbohydrate?
a)
Stores energy
b)
Movement
c)
Stores genetic information
d)
Speeds up reactions
38.
What is the monomer of proteins?
a)
amino acids
b)
polypeptides
c)
nucleotides
d)
monosaccharides
39.
What is the function of nucleic acids?
a)
Stores energy
b)
Stores genetic information
c)
Movement
d)
Physical structure
40.
All polymers are made up of...
a)
monosaccharides
b)
monomers
c)
proteins
d)
None of these
41.
What are the components of a nucleotide?
a)
nitrogen base, phosphate group, and pentose sugar
b)
pentose sugar, purine, and pyrimidine
c)
nitrogen base and a phosphate group
d)
DNA, phosphate group, monosaccharide
42.
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
43.
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
44.
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
45.
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
46.
All of the following are examples of lipids except:
a)
oil
b)
wax
c)
fatty acid
d)
cellulose
47.
Most enzymes:
a)
speed up the chemical reaction
b)
have no effect on the rate of the chemical reaction
c)
slow the rate of the chemical reaction
d)
keep the rate of the chemical reaction the same
48.
What suffix is used in the names of most carbohydrates?
a)
-ase
b)
-nic
c)
-ose
d)
-yme
49.
What suffix is used in the names of most enzymes?
a)
- ase
b)
- gen
c)
- yme
d)
-nic
50.
RNA contains the sugar...
a)
Deoxyribose
b)
Glucose
c)
Ribose
d)
Lipids
51.
These steroids are classified as _______.
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
52.
Which element listed below is not found in lipids?
a)
carbon
b)
hydrogen
c)
nitrogen
d)
oxygen
53.
All organic compounds contain the element
a)
carbon
b)
nitrogen
c)
phosphorus
d)
sulfur
54.
Which is the monomer (building block) for lipids?
a)
fatty acids & glycerol
b)
nucleotide
c)
amino acids
d)
monosaccharide
55.
What is the ratio of the elements found in carbohydrates?
a)
1:2:1
b)
2:1
c)
1:2
d)
1:4
56.
What is the function of carbohydrates?
a)
store genetic information
b)
store energy (long-term)
c)
store energy (short-term)
d)
build skin, hair, nails, muscles
57.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
58.
What type of macromolecule are enzymes?
a)
Protein
b)
Carbohydrate
c)
Lipid
d)
Nucleic Acid
59.
The part of the enzyme that the substrate bonds to is called the _____.
a)
active site
b)
activation energy
c)
bond site
d)
peptide bond
60.
Which of these do NOT affect enzyme activity?
a)
Temperature
b)
pH
c)
Competitive Inhibitors
d)
Carbohydrates
61.
Which of these is most likely an enzyme? (Based on the suffix)
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
62.
When respiration occurs with oxygen, it is called _______
a)
anaerobic
b)
aerobic
c)
light-dependent
d)
fermentation
63.
Where does the Krebs' Cycle occur?
a)
mitochondria
b)
cell membrane
c)
chloroplast
d)
cytoplasm
64.
If your body runs out of oxygen, it will begin to perform ______.
a)
alcohol fermentation
b)
photosynthesis
c)
cellular respiratio
d)
lactic acid fermentation
65.
What type(s) of cells perform cellular respiration?
a)
all cells
b)
animals
c)
plants
d)
bacteria
66.
What substance produced by alcoholic fermentation makes bread rise?
a)
lactic acid
b)
oxygen
c)
alcoho
d)
carbon dioxide
67.
During which portion of photosynthesis is carbon dioxide absorbed?
a)
light-dependent
b)
light- independent
c)
Krebs Cycle
d)
ETC
68.
Which molecule is broken down by glycolysis?
a)
citric acid
b)
oxygen
c)
ADP
d)
glucose
69.
What does the light-independent reaction use for energy?
a)
glucose
b)
water
c)
ATP s
d)
sunlight
70.
Which of the following best represents the waste products of cellular respiration?
a)
carbon dioxide and water
b)
carbon dioxide
c)
water
d)
carbon dioxide and oxygen
71.
What is produced during the light- dependent reaction?
a)
glucose
b)
oxygen
c)
water
d)
CO2
72.
Which of the following is NOT a stage of cellular respiration?
a)
glycolysis
b)
Krebs Cycle
c)
fermentation
d)
ETC
73.
During which step of cellular respiration is the majority of the ATP created?
a)
fermentatio
b)
glycolysis
c)
Krebs Cycle
d)
ETC
74.
Energy is released from ATP when
a)
a phosphate group is added
b)
a phosphate group is removed
c)
adenine binds to ribose
d)
ATP is exposed to sun
75.
What do all cells use for energy?
a)
Carbs
b)
Protein
c)
Fat
d)
ATP
76.
which contains more energy?
a)
ATP
b)
ADP
77.
In which organelle does photosynthesis occur?
a)
Mitochondria
b)
Chloroplast
c)
Endoplasmic Reticulum
d)
Lysosome
78.
Which of the following formulas represents photosynthesis?
a)
6 H2O + 6 O2 = C6H12O6 + 6 CO2
b)
6 H2O + 6 CO2 = C6H12O6 + 6 O2
c)
C6H12O6 + + 6 O2 = 6 H2O + 6 CO2
79.
What is the correct balanced chemical equation for cellular respiration?
a)
C6H12O6+6O2=6CO2+6H2O
b)
C6H12O6+O2=6CO2+6H2O+energy(ATP)
c)
6C6H12O6+6O2=6CO2+6H2O+energy(ATP)
d)
C6H12O6+6O2=6CO2+6H2O+energy(ATP)
80.
Where does cellular respiration occur?
a)
mitochondria
b)
stomata
c)
phloem
d)
chloroplast
81.
What is another name for fermentation?
a)
aerobic respiration
b)
anaerobic respiration
c)
lactic acid
d)
mineral deficiency
82.
Which is not a product of cellular respiration?
a)
oxygen
b)
carbon dioxide
c)
water
d)
energy (ATP)
83.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
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