CHEM 1301 SPRING 2005
TEST 1 VERSION 1
NO CHEATING!
BUBBLE IN “1” IN THE P COLUMN TO GET YOUR GRADE POSTED!!!!! [the only way you’ll find out how you did!]
1.
Which of the following formulas refers to an element?
(A)
H2O
2.
Which of the following is NOT a postulate of Dalton’s atomic theory?
(A)
(B)
(C)
(D)
(E)
all matter is made up of atoms
atoms are small and indivisible
atoms cannot be created or destroyed
atoms of a particular element can differ in some way
atoms of different elements are different
3.
Two substances, A and B, react together to form C and D. When 4.0 g of A react with 5.0 g of B, 6.0 g of C are formed. In another
experiment with the same substances, 12.0 g of A are reacted with 15.0 g of B. How many grams of D are formed?
(A)
27.0 g
4.
Rutherford's experiment was used to indicate the presence of:
(A)
(D)
electrons
neutrons
5.
Which of the following elements does NOT have a symbol taken from a LATIN name?
(A)
iron
6.
Which of the following elements is correctly matched with its group?
(A)
(D)
phosphorus is an alkali metal
nitrogen is a noble gas
(B)
(B)
H2O2
6.0 g
(B)
(E)
(B)
(C)
(C)
O2
(D)
18.0 g
(D)
protons
a positive nucleus without electrons stuck to it
copper
(C)
(B)
(E)
sodium
flubber is a halogen
sulfur is a chalcogen
1
Xf
(E)
3.0 g
(E)
(C)
both C and D
9.0 g
electron's energy levels
(D)
titanium
(E)
potassium
(C)
manganese is an alkaline earth metal
7.
In the list below, how many symbols are incorrectly matched with the element name:
Co is cobalt, Fe is fluorine, P is potassium, N is nickel, H is helium
(A)
1
(B)
8.
Which of the following is incorrectly named as a law or theory?
(A)
(B)
(C)
(D)
(E)
The law of gravity that things fall to the ground
Dalton’s atomic theory that substances are composed of sub-microscopic particles
Charles’ law that the volume of a gas increases as the temperature increases
Avogadro’s law that the volume of a gas is proportional to the number of sub-microscopic particles
VSEPR theory that sub-microscopic molecules adopt shapes based on electron repulsion.
9.
Which of the following statements is FALSE?
(A)
(D)
sulfur does not conduct electricity
silicon is a metalloid
10.
Which of the following is an actinide?
(A)
Dy
11.
Which of these scientists is NOT matched with the correct nationality?
(A)
(C)
(E)
John Dalton was British
Ernest Rutherford was British
Niels Bohr was German
12.
Which of the following statements is FALSE?
(A)
(B)
(C)
(D)
(E)
atoms contain equal numbers of protons and electrons
the mass of an atom is equal to the number of protons + the number of neutrons
neutrons have a mass of 1 and a charge of 0
to calculate the number of neutrons in an atom, use the mass in the periodic table
the atomic number is the number of protons in an atom
(B)
2
P
(C)
3
(D)
(B)
(E)
gold is malleable
hydrogen is a non-metal
(C)
W
(D)
(B)
(D)
4
(E)
(C)
Rn
Antoine Lavoisier was French
Dmitri Mendeleyev was Russian
2
5
geranium is a metal
(E)
U
13.
Which statement is INCORRECT?
(A)
(B)
(C)
(D)
(E)
60
14.
Tellurium consists of 3 common isotopes. Half of tellurium atoms have a mass of 127, and another 0.45 of tellurium atoms weigh 128.
What is the mass of the remaining isotope? The atomic mass of tellurium is 127.6.
(A)
126
15.
Magnesium has an atomic mass of 24.3. There are two isotopes of magnesium – one contains 12 neutrons and the other contains 13
neutrons in the nucleus. What is the fractional abundance of the first one (the one with 12 neutrons)?
(A)
0.3 or 3/10
Zn has the same number of protons and neutrons
Mn has the same number of electrons and neutrons
18
O has the same number of protons and neutrons
41
K has the same number of protons and electrons
238
U contains 146 neutrons
50
(B)
(B)
127
(C)
0.5 or 1/2
129
(D)
(C)
0.67 or 2/3
16.
Which of the following statements is incorrect?
(A)
(C)
(E)
red light has a shorter wavelength than infrared
green light has a higher frequency than blue light
radiowaves have a longer wavelength than microwaves
(B)
(D)
17.
What is the energy of light that has wavelength of 8.923 x 10-7 m?
(A)
(D)
5.912 x 10-31 J
2.229 x 10-19 J
18.
Which of the following statements is true?
(A)
(C)
(E)
The lowest energy p-subshell is the 1p
Electrons in atoms have only certain, allowed energy values
The fifth shell can contain a maximum of 25 electrons
(B)
(E)
2.229 x 10-28 J
1.121 x 106 J
(D)
3
0.7 or 7/10
(E)
(E)
131
0.75 or 3/4
ultraviolet has a higher energy than violet light
gamma rays are the most energetic form of light
(C)
(B)
(D)
130
1.773 x 10-22 J
A maximum of 10 electrons can go into a f-subshell
A boron atom has electrons in 3 shells
19.
What is the electron configuration of bromine?
(A)
(D)
1s22s22p1
1s22s22p63s23p64s24p65s25p5
20.
What is the last part of the electron configuration of Gadolinium (Gd)
(A)
1f7
(B)
(B)
(E)
6d7
1s22s22p63s23p64s24d104p5
1s22s22p63s23p64s23d104p5
(C)
6f7
(C)
(D)
4
4d7
4p5
(E)
4f7