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3rd Quarter Review
Test Description: Heat to Acid Base Review
Instructions: Answer all questions to get your test result.
1) What phase changes does water undergo at 100 degrees Celsius?
A
vaporization and freezing
B
melting and freezing
C
condensation and vaporization
D
condensation and melting
2) According to the wave-mechanical model of the atom, electrons in an atom
A
have a positive charge
B
are located in orbitals outside the nucleus
C
are most likely found in an excited state
D
travel in defined circles
3) What is the total charge of the nucleus of a carbon atom?
A
+12
B
+6
C
0
D
-6
4) A sample composed only of atoms having the same atomic number is classified as
A
a compound
B
an element
C
an isomer
D
a solution
5) Which two particles each have a mass approximately equal to one atomic mass unit?
A
electron and neutron
B
proton and electron
C
electron and positron
D
proton and neutron
6) Which two characteristics are associated with metals?
A
high first ionization energy and low electronegativity
B
low first ionization energy and high electronegativity
C
low first ionization energy and low electronegativity
D
high first ionization energy and high electronegativity
7) Which element is most chemically similar to chlorine?
A
F
B
Ar
C
Fr
D
S
8) Which substance can be decomposed by chemical means?
A
ammonia
B
silicon
C
phosphorus
D
oxygen
9) An oxygen molecule contains a double bond because the two atoms of oxygen share a total of
A
3 electrons
B
1 electron
C
4 electrons
D
2 electrons
10) Which term is defined as a measure of the average kinetic energy of the particles in a sample?
A
temperature
B
chemical energy
C
thermal energy
D
pressure
11) A 3.0 M HCl(aq) solution contains a total of
A
3.0 moles of HCl per mole of water
B
3.0 grams of HCl per mole of solution
C
3.0 grams of HCl per liter of water
D
3.0 moles of HCl per liter of solution
12) A dilute, aqueous potassium nitrate solution is best classified as a
A
heterogeneous mixture
B
homogeneous compound
C
homogeneous mixture
D
heterogeneous compound
13) A 5.0-gram sample of zinc and a 50.-milliliter sample of hydrochloric acid are used in a chemical reaction. Which combination of these samples has the fastest reaction rate?
A
zinc powder and 3.0 M HCl(aq)
B
a zinc strip and 3.0 M HCl(aq)
C
zinc powder and 1.0 M HCl(aq)
D
a zinc strip and 1.0 M HCl(aq)
14) For a given reaction, adding a catalyst increases the rate of the reaction by
A
providing an alternate reaction pathway that has a higher activation energy
B
using the same reaction pathway and decreasing the activation energy
C
providing an alternate reaction pathway that has a lower activation energy
D
using the same reaction pathway and increasing the activation energy
15) An Arrhenius base yields which ion as the only negative ion in an aqueous solution?
A
hydrogen ion
B
hydronium ion
C
hydride ion
D
hydroxide ion
16) According to one acid-base theory, a water molecule acts as an acid when the water molecule
A
donates an H+
B
accepts an H+
C
accepts an OH–
D
donates an OH–
17) Which nuclear decay emission consists of energy, only?
A
positron
B
gamma radiation
C
alpha particle
D
beta particle
18) The energy released by a nuclear reaction results primarily from the
A
breaking of bonds between atoms
B
formation of bonds between atoms
C
conversion of energy into mass
D
conversion of mass into energy
19) Which electron configuration could represent a sodium atom in an excited state?
A
2–7-2
B
3-7-1
C
2–8–1
D
1-9-1
20) What is the total number of neutrons in an atom of Fe-57?
A
31
B
26
C
57
D
83
*select an answer for all questions
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