Download e) an atom is mostly empty space. e) e) 20 protons, 20 neutrons, and

1. The first scientist to show that atoms
emit any negative particles was
a)
b)
c)
d)
e)
5. Which of the following atomic symbols
is incorrect?
J. J. Thomson.
Lord Kelvin.
Ernest Rutherford.
William Thomson.
John Dalton.
a)
14
6
C
b)
37
17
Cl
c)
32
15
P
d)
39
19
K
14
8
e)
2. The scientist whose alpha-particle
scattering experiment led him to
conclude that the nucleus of an atom
contains a dense center of positive
charge is
a) J. J. Thomson.
b) Lord Kelvin.
c) Ernest Rutherford.
d) William Thomson.
e)John Dalton.
3. Which one of the following statements
about atomic structure is false?
a)
b)
c)
d)
e)
7.
40
20
N
Ca2+ has
a)
b)
c)
electrons.
d)
e)
20 protons, 20 neutrons, and 18
electrons.
22 protons, 20 neutrons, and 20
electrons.
20 protons, 22 neutrons, and 18
22 protons, 18 neutrons, and 18
electrons.
20 protons, 20 neutrons, and 22
electrons.
8. Which of the following has 61 neutrons,
47 protons, and 46 electrons?
The electrons occupy a very large
volume compared to the nucleus.
Almost all of the mass of the
atom is concentrated in the
nucleus.
The protons and neutrons in the
nucleus are very tightly packed.
The number of protons and
neutrons is always the same in
the neutral atom.
All of these statements (a-d) are
true.
a)
80
Pm
61
b)
108
Ag+
47
c)
108
Pd–
46
d)
108
Cd+
47
108
Ag
47
e)
9.All of the following are true except:
4. Rutherford’s experiment was important
because it showed that:
a)
b)
c)
d)
e)
radioactive elements give off
alpha particles.
gold foil can be made to be only a
few atoms thick.
a zinc sulfide screen scintillates
when struck by a charged
particle.
the mass of the atom is uniformly
distributed throughout the atom.
an atom is mostly empty space.
a)
b)
c)
d)
e)
ions.
Ions are formed by adding
electrons to a neutral atom.
Ions are formed by changing the
number of protons in an atom’s
nucleus.
Ions are formed by removing
electrons from a neutral atom.
An ion has a positive or negative
charge.
Metals tend to form positive
10. Which of the following statements is
(are) true?
a)
18
8
b)
14
6
c)
18
8
15. Complete the following table.
O and 199 F have the same
number of neutrons.
C and 147 N are isotopes of each
other because their mass numbers
are the same.
O2– has the same number of
electrons as 20
10 Ne.
d)
e)
a and b
a and c
11. Which of the following are incorrectly
paired?
a) K, alkali metal
b) Ba, alkaline earth metal
c) O, halogen
d) Ne, noble gas
e) Ni, transition metal
12. Which of the following is incorrectly
named?
a)
b)
c)
d)
e)
Pb(NO3)2, lead(II) nitrate
NH4ClO4, ammonium
perchlorate
PO43–, phosphate ion
Mg(OH)2, magnesium hydroxide
NO3–, nitrite ion
13. All of the following are in aqueous
solution. Which is incorrectly named?
a)
b)
c)
d)
HC2H3O2, acetic acid
HBr, bromic acid
H2SO3, sulfurous acid
HNO2, nitrous acid
f)
HClO3, chloric acid
16.
40
20
Ca2+ has
a)
b)
c)
d)
e)
20 protons, 20 neutrons, and 18
electrons.
22 protons, 20 neutrons, and 20
electrons.
20 protons, 22 neutrons, and 18
electrons.
22 protons, 18 neutrons, and 18
electrons.
20 protons, 20 neutrons, and 22
electrons.
17. All of the following are characteristics of
metals except:
a)
b)
c)
d)
e)
good conductors of heat
malleable
ductile
often lustrous
tend to gain electrons in chemical
reactions
13. What is the molar mass of ethanol
(C2H5OH)?
a)
b)
c)
d)
e)
45.07
38.90
46.07
34.17
62.07
Naturally occurring copper exists in two
isotopic forms: 63Cu and 65Cu. The
14. Write the names of the following
atomic mass of copper is 63.55 amu.
compounds:
What is the approximate natural
abundance of 63Cu?
a) FeSO4
Iron (II) Sulfate_____________________
a) 63%
b) NaC2H3O2 Sodium Acetate ____________________
b)
c) KNO2
Potassium Nitrite___________________ 90%
c) 70%
d) Ca(OH)2
Calcium Hydroxide_________________
d)
50%
e)
NiCO3
Nickel (II) Carbonate
e) 30%