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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
condensation and vaporization
B
vaporization and freezing
C
melting and freezing
D
condensation and melting
2) According to the wave-mechanical model of the atom, electrons in an atom
A
have a positive charge
B
travel in defined circles
C
are located in orbitals outside the nucleus
D
are most likely found in an excited state
3) What is the total charge of the nucleus of a carbon atom?
A
-6
B
+6
C
+12
D
0
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
proton and neutron
B
proton and electron
C
electron and positron
D
electron and neutron
6) Which two characteristics are associated with metals?
A
high first ionization energy and high electronegativity
B
high first ionization energy and low electronegativity
C
low first ionization energy and high electronegativity
D
low first ionization energy and low electronegativity
7) Which element is most chemically similar to chlorine?
A
Ar
B
F
C
S
D
Fr
8) Which substance can be decomposed by chemical means?
A
silicon
B
ammonia
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
2 electrons
C
4 electrons
D
1 electron
10) Which term is defined as a measure of the average kinetic energy of the particles in a sample?
A
thermal energy
B
temperature
C
pressure
D
chemical energy
11) A 3.0 M HCl(aq) solution contains a total of
A
3.0 grams of HCl per liter of water
B
3.0 grams of HCl per mole of solution
C
3.0 moles of HCl per liter of solution
D
3.0 moles of HCl per mole of water
12) A dilute, aqueous potassium nitrate solution is best classified as a
A
heterogeneous compound
B
heterogeneous mixture
C
homogeneous compound
D
homogeneous mixture
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
a zinc strip and 3.0 M HCl(aq)
B
zinc powder and 1.0 M HCl(aq)
C
a zinc strip and 1.0 M HCl(aq)
D
zinc powder and 3.0 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 lower activation energy
B
providing an alternate reaction pathway that has a higher activation energy
C
using the same reaction pathway and decreasing the 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
donates an OH–
D
accepts an OH–
17) Which nuclear decay emission consists of energy, only?
A
beta particle
B
positron
C
alpha particle
D
gamma radiation
18) The energy released by a nuclear reaction results primarily from the
A
conversion of mass into energy
B
conversion of energy into mass
C
formation of bonds between atoms
D
breaking of bonds between atoms
19) Which electron configuration could represent a sodium atom in an excited state?
A
2–8–1
B
2–7-2
C
1-9-1
D
3-7-1
20) What is the total number of neutrons in an atom of Fe-57?
A
57
B
83
C
26
D
31
*select an answer for all questions
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