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JEOPARDY
Third Nine Weeks9 weeks review
El
Dorado
High
School
AZTECS
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Which of the following are found in pure
water?
A hydroxide ions
B hydronium ions
C water molecules
D all of these
A: D. all of these
S2C04 Jeopardy Review
What is the concentration of
pure water at 25 °C?
F 10-7 M
G 7.0 M
H 10.7 M
7
J 10 M
A: F. 10 ^-7
S2C04 Jeopardy Review
+
H3O
in
An aqueous solution of sodium hydroxide
reacts completely with a solution of
hydrochloric acid. After all the water
evaporates from the reaction mixture, what
will remain?
F sodium chloride
G chlorohydroxide
H sodium oxide
J sodium chlorate
A:
F. sodium chloride
S2C04 Jeopardy Review
What is the most common oxidation number
of combined sodium?
F2
G1
H0
J +1
A: J. +1
S2C04 Jeopardy Review
In balanced chemical equations, the
sum of all the oxidation numbers is —
A half of the number of elements
B always +1
C always –1
D always zero0
A: D. always zero
S2C04 Jeopardy Review
In the reaction 2K + Cl2 → 2K+ + 2 Cl
which element(s) is/are reduced?
F K only
G Cl2 only
H both K and Cl2
J neither K nor Cl2
A:
S2C04 Jeopardy Review
G.) Cl2 only
What are the oxidation numbers in the
compound H2SO4?
A.) H = +1, S = 0, O = 2
B.) H = +1, S = +6, O = -2
C.) H = -1, S = +7, O = 1
D.) H = +1, S = +1, O = 1
A: B.
S2C04 Jeopardy Review
What are the oxidation numbers in the
compound NaCl?
A Na = 0, Cl = 0
B Na = +1, Cl = -1
C Na = 1, Cl = +1
D Na = +2, Cl = 2
A: B.)
S2C04 Jeopardy Review
Which of the following statements is correct
regarding oxidation and reduction processes?
A Oxidation decreases the oxidation
number.
B Oxidation increases the oxidation
number.
C Reduction increases the oxidation
number.
D Oxidation and reduction have no
effect on the oxidation numbers.I
400
S2C04 Jeopardy Review
A: B.
Which must be present for a piece of iron
to rust?
A carbon
B chlorine
C oxygen
D sodium
500
A: C.) oxygen
S2C04 Jeopardy Review
In a redox reaction, the chemical which
gains electrons is called the —
A oxidizing agent
B neutralizer
TH
C reducing agent
D releasing agent
A:
S2C04 Jeopardy Review
A
What is the pH of a basic solution
A: above 7
S2C04 Jeopardy Review
For two acids of equal concentration, the stronger
acid has —
A a higher concentration of hydroxide ions
B a higher pH
C a higher concentration of hydronium ions
D a stronger bond
A:
S2C04 Jeopardy Review
C.
Which of the following is used to calculate
the average atomic mass of an element?
F the naturally occurring isotopes
GH
the five most abundant isotopes
H the isotopes that are man made
J the least common isotopes
A:
F. the naturally occurring isotopes
S2C04 Jeopardy Review
How should the students check to make sure that the
liquid in the beaker at the start is really the acid instead of
the base?
F Taste it to make sure it is sour.
G Feel it between their fingers, bases are slick.
H Check the pH meter reading.
J Use all of the above to make sure.
A: H.
S2C04 Jeopardy Review
A sample of fruit juice is found to have a
hydrogen ion concentration of 2.87 x 10-4. What
would the pH be?
F 2.87
G 3.54
H 4.58
J 8.16
A.
G.
S2C04 Jeopardy Review
What is the correct net ionic equation for the following formula:
1 Na2CO3(aq) + 1 FeCl2(aq)  1 FeCO3(s) + 2 NaCl(aq)
A. Na+ + Cl- → NaCl
B. 2Na+ + 2Cl- → 2NaCl
C. Fe +2 + CO3 -2 → FeCO3
D. Fe+ + CO3- → FeCO3
A
A.
C.
S2C04 Jeopardy Review
What is the net ionic equation for the equation below:
1 Mg(OH)2(aq) + 2 HCl(aq)  1 MgCl2(aq) + 2 H2O(l)
A: 2 H+ (aq) + 2 OH- (aq)  2 H2O
S2C04 Jeopardy Review
What is the pH of an acidic solution
Th
A:
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below a 7
What is the pH and pOH for the given number
[H+] = 2.0 x 10-3 M =
A: pH= 2.70
S2C04 Jeopardy Review
pOH= 11.3
What is the pH of a solution that has a pOH
of 3.2?
A: pH= 10.8
S2C04 Jeopardy Review
What is the pH of a neutral substance?
T
A:
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7
What is the pOH of a solution if the
[H+] is 3.4 x 10-5M? ______________
Is it an acid, base or neutral substance?
T
A: 9.53, Acid
S2C04 Jeopardy Review
Acids turn blue litmus paper ________________
T
A:
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red
Bases turn red litmus paper
__________________.
C
A:
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Blue