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Review Chemistry
Chapter 2
Ch 2-1
Nature of
matter
Ch 2-2
Properties
of water
Ch 2-3
Carbon
compounds
Ch 2-4
Enzymes
Miscellaneo
us
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
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500
Theme 1 Prompt
100 Points
The positively charged particle in an
atom is the:
a. neutron
b. ion
c. proton
d. electron.
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Theme 1 Response
100 Points
c. proton
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Theme 1 Prompt
200 Points
Two or more different atoms are
combined in definite proportions
are:
a. symbol
b. isotope
c. element
d. compound
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Theme 1 Response
200 Points
d. compound
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Theme 1 Prompt
300 Points
A covalent bond is formed by the:
a. transfer of electrons
b. sharing of electrons
c. gaining of electrons
d. losing of electrons
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Theme 1 Response
300 Points
b. sharing of electrons
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Theme 1 Prompt
400 Points
When you shake sugar and sand
together in a test tube, you cause
them to form a:
a. compound
b. mixture
c. solution
d. suspension
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Theme 1 Response
400 Points
b. mixture
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Theme 1 Prompt
500 Points
Explain the relationship among
atoms, elements and compounds.
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Theme 1 Response
500 Points
Elements are composed of atoms.
Compounds are composed of atoms
of two or more elements combined
in definite proportions.
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Theme 2 Prompt
100 Points
Explain the properties of cohesion
and adhesion. Give an example of
each property.
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Theme 2 Response
100 Points
Cohesion is an attraction between molecules of the
same substance. A example is drops of water forming
beads on a smooth surface. Adhesion is an attraction
between molecules of different substances. An example
is capillary action.
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Theme 2 Prompt
200 Points
What is the relationship between
solutions, solutes and solvents?
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Theme 2 Response
200 Points
A solution is a mixture in which one substance is
dissolved in another. The solute is the substance that is
dissolved. The solvent is the substance in which the
solute is dissolved.
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Theme 2 Prompt
300 Points
How are acids and bases different?
How do their pH values differ?
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Theme 2 Response
300 Points
An acid is any compound that produces H+ ions in
solution; acidic solutions have pH values below 7.
A base is a compound that produces hydroxide ions
(OH-) in solution; basic solution have pH values
above 7.
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Theme 2 Prompt
400 Points
Predicting: Suppose you wanted to
increase the pH of a solution. What
could you add to the solution to
increase the pH? Explain your
prediction.
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Theme 2 Response
400 Points
Adding a base to the solution would
increase its pH because a base
produces hydroxide ions in solution
and basic solutions have pH values
above 7.
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Theme 2 Prompt
500 Points
Predicting: Changing the temperature or
pH can change an enzyme’s shape.
Describe how changing the temperature
or pH might affect the function of the
enzyme in Fig 2-21.
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Theme 2 Response
500 Points
If the temperature or pH were changed, the
shape of the enzyme hexokinase could change.
It might lose its ability to bind with the
substrates, glucose and ATP, and an enzymesubstrate complex would not form. As a result,
the enzyme would not speed up the reaction.
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Theme 3 Prompt
100 Points
In polymerization, complex
molecules are formed by joining
together of:
a. macromolecules
b. carbohydrates
c. polymers
d. monomers
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Theme 3 Response
100 Points
d. monomers
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Theme 3 Prompt
200 Points
Proteins are polymers formed from:
a. lipids
b. carbohydrates
c. amino acids
d. nucleic acids
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Theme 3 Response
200 Points
c. amino acids
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Theme 3 Prompt
300 Points
What is the difference between
saturated fat and unsaturated fat?
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Theme 3 Response
300 Points
Saturated fat= means that each carbon
atom is joined to another carbon by a single
bond a lipid’s fatty acids. Ex: butter,
margarine (solids).
Unsaturated fat= means that there is at
least one double bond between two carbons
in a fatty acid. If there is more than one
double bond, it’s called polyunsaturated fat.
Ex: any cooking oil, sesame oil, peanut oil
(liquids).
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Theme 3 Prompt
400 Points
Explain the relationship between
monomers and polymers using
polysaccharides as an example.
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Theme 3 Response
400 Points
Polymers are large macromolecules made up
of smaller molecules called monomers. For
example: monomers called monosaccharide
are joined together to form polymers called
polysaccharides.
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Theme 3 Prompt
500 Points
Describe at least one function of
each group of organic compounds.
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Theme 3 Response
500 Points
Carbohydrates- main source of energy
Lipids – used to store energy; are parts of
biological membranes and waterproof
coverages
Nucleic acids – store and transmit DNA
Proteins – control the rate of chemical
reactions, regulate cell processes, form
tissues, transport substances and help to
fight diseases.
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Theme 4 Prompt
100 Points
An enzyme speeds up a reaction by:
a. lowering the activation energy
b. raising the activation energy
c. releasing energy
d. absorbing energy
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Theme 4 Response
100 Points
a. lowering the activation energy
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Theme 4 Prompt
200 Points
In a chemical reaction, a reactant
binds to an enzyme at a region
known as the:
a. catalyst
b. product
c. substrate
d. active site
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Theme 4 Response
200 Points
d. active site
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Theme 4 Prompt
300 Points
What is a chemical reaction?
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Theme 4 Response
300 Points
A chemical reaction is a process that
changes one set of chemicals into another
set of chemicals.
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Theme 4 Prompt
400 Points
Describe the two energy changes
that can occur in a chemical
reaction.
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Theme 4 Response
400 Points
Some chemical reactions release
energy, and others absorb energy.
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Theme 4 Prompt
500 Points
What relationship exists between an
enzyme and a catalyst?
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Theme 4 Response
500 Points
An enzyme is a biological catalyst.
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Theme 5 Prompt
100 Points
Describe some factors that may
influence enzyme activity.
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Theme 5 Response
100 Points
Factors that can influence enzyme
activity include pH, temperature
and proteins in cells that help turn
key enzymes “on” and “off” at
critical stages.
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Theme 5 Prompt
200 Points
Name two basic kinds of nucleic
acids. What sugar does each
contain?
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Theme 5 Response
200 Points
Two basic kinds are
ribonucleic acid (RNA)
which contains the
sugar ribose and
deoxyribonucleic acid
(DNA) which contains
sugar deoxyribose.
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Theme 5 Prompt
300 Points
Describe parts of a nucleotide.
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Theme 5 Response
300 Points
Nucleotide consists of 5-carbon
sugar, a phosphate group and a
nitrogenous base.
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Theme 5 Prompt
400 Points
How are atoms in a compound held
together?
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Theme 5 Response
400 Points
Atoms in a compound are held together by a
chemical bond (ionic bond or covalent bond).
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Theme 5 Prompt
500 Points
What is a radioactive isotope?
Describe two uses of radioactive
isotopes.
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Theme 5 Response
500 Points
Radioactive isotopes are isotopes whose nuclei are
unstable and break down at a constant rate over time.
Radioactive isotopes are used in determining ages of
rocks, treating cancer, killing bacteria in food, and
following the movements of substances within
organisms.
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Put some closing
remark here
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The Daily Double
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