1. Which model represents the law of conservation of
matter?
Slide 3
2. Which of the following is insoluble in water? In other
words, which one can be a precipitate? i) Ammonium chloride ii)
Calcium chromate iii) Barium bromide iv) Copper II carbonate
Slide 4
#3
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#4
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#5
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#6
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#7
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#8
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#9
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#10
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1. Which acid is the stronger acid? A. HCl B. HF 2. Which acid
will have a higher pH? A. HCl B. HF NOTE: Must answer as a
combination answer. Example: AA, AB, BB, or BA. #11
Slide 13
#12 What is the pH of a solution that has a hydronium ion
concentration of [2.5 x 10 -3 ]? A. 11.4 B. 3.0 C. 2.6 D. 9.0
Slide 14
Not the same question: #13 What is the pOH of a solution that
has a hydronium ion concentration of [2.5 x 10 -3 ]? A. 11.4 B. 3.0
C. 2.6 D. 9.0
Slide 15
#14 What is the hydroxide ion concentration of a solution that
has a pOH of 8.8? A. 6.31 x 10 -6 B. 1.58 x 10 -9 C. 5.04 x 10 -5
D. 1.32 x 10 -8
Slide 16
#15 Consider four sealed, rigid containers with the following
volumes: 50 mL, 100 mL, 250 mL and 500 mL. If each of these
contains.25 moles of helium gas at standard temperature, which
container would have the greatest pressure? A 50 mL B 100 mL C 250
mL D 500 mL
Slide 17
#16 Which substance would be least likely to dissolve in a
polar solvent? A nonpolar molecule B acids C polar molecule D ionic
compound
Slide 18
#17 When referring to the solubility of different substances,
the phrase "like dissolves like" is often used as a guideline to
select an appropriate solvent. The property referenced in "like
dissolves like" is the A mass of the molecule B size of the
molecule C polarity of the molecule D temperature of the
molecule
Slide 19
#18 If the temperature of a gas changes, but the number of
moles and volume remain constant, which of the following values
must also change? A density B pressure C number of atoms D
mass
Slide 20
#19 How many electrons are in a Cd 3+ ion? A 112 B 51 C 48 D
45
Slide 21
#20 From which of the following atoms would it be the MOST
difficult to remove an electron? A sodium B aluminum C sulfur D
chlorine
Slide 22
#21 A sample of Element X is found to contain 72.15% of isotope
type 1 (84.9118 amu) and 27.85% of isotope type 2 (86.9092 amu).
Calculate the average atomic mass. A 85.13 amu B 85.47 amu C 86.21
amu D 86.49 amu
Slide 23
#22 The protons in Rutherfords experiments were used to A
identify chemical properties B identify the melting point C
determine molecular mass D bombard sheets of gold
Slide 24
#23 Which of the following atoms would have the largest ionic
radius? A lithium B sodium C potassium D cesium
Slide 25
#24 A solution in which more solute is dissolved than is
typically soluble at a given temperature is A unsaturated B
saturated C supersaturated D diluted
Slide 26
#25 What volume of 2.5M NaOH solution contains 3.25 mol of
NaOH? A 0.098 L B 0.575 L C 1.30 L D 1.45 L
Slide 27
#26 Element X reacts with chlorine to form an ionic compound
that has the formula XCl 2. To which group on the Periodic Table
could element X belong? (A) Group 1 (B) Group 13 (C) Group 2 (D)
Group 15
Slide 28
#27 Which general trend is found in Period 3 as the elements
are considered in order of increasing atomic number? (A) increasing
atomic radius (B) increasing electronegativity (C) decreasing
atomic mass (D) decreasing first ionization energy
Slide 29
#28 Which of the following stated electrons were scattered
throughout a positive mass? (A) Rutherford Model (B) Planck Model
(C) Bohr Model (D) Plum Pudding Model
Slide 30
#29 Which conclusion is based on the gold foil experiment and
the resulting model of the atom? (A) An atom is mainly empty space,
and the nucleus has a positive charge. (B) An atom is mainly empty
space, and the nucleus has a negative charge. (C) An atom has
hardly any empty space, and the nucleus has a positive charge. (D)
An atom has hardly any empty space, and the nucleus has a negative
charge.
Slide 31
#30 Which of the following is a false statement: (A) Ernest
Rutherford identified the nucleus of the atom. (B) Democritus
thought that changes in matter resulted from atoms simply
rearranging. (C) John Dalton believed that all atoms of the same
element were all identical. (D) According to J.J. Thomson, atoms of
elements are indivisible
Slide 32
#31 A bromine atom in the ground state will have an electron
configuration of (A) [Ar] 4s 1 3d 10 4p 5 (B) [Ar] 4s 2 3d 9 4p 5
(C) [Ar] 4s 2 3d 10 4p 5 (D) [Ar] 4s 2 3d 9 4p 6