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CHM 1020 FINAL EXAM QUESTIONS WITH VERIFIED ANSWERS
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CHM 1020 FINAL EXAM QUESTIONS WITH VERIFIED ANSWERS
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CHM 1020 FINAL EXAM QUESTIONSWITH VERIFIED ANSWERS
D. 2,300,000 CORRECT ANSWERS 2.3 x 106 meters is the same as
____________ meters.
A. 2.300000
B. 230,000
C. .0000023
D. 2,300,000
d) 17,18 CORRECT ANSWERS How many protons and neutrons, respectively,
are in an atom of chlorine (mass number 35)?
a) 17, 17
b)18, 17
c)17, 35
d)17, 18
c) +1 CORRECT ANSWERS For the ionic compound NaCl, what is the charge on
the sodium ion?
a) -1
b)+2
c)+1
d)0
b) hydrogen CORRECT ANSWERS Which of the following is a diatomic
molecule: hydrogen (H2), aluminum (Al), sulfur (S8), or carbon (C)?
a)carbon
b)hydrogen
c)sulfur
d)aluminum
d) 72 CORRECT ANSWERS What is the correct answer to the following problem
(with the correct number of significant figures)?
(3.2 ÷ 0.123) + 45.7 = ?
,a)71.7
b)71.716
c)71.72
d)72
b) III only CORRECT ANSWERS Which diagram(s) best represent(s) only
individual atoms?
a) II and III only The atoms are not bound to other atoms.
b) III only
c) IV only
d) II only
e) I only
d) number of protons in a nucleus. CORRECT ANSWERS The atomic number is
the
a) number of protons and neutrons in a nucleus.
b) number of neutrons in a nucleus.
c) same as the mass number of an atom.
d) number of protons in a nucleus.
d) Environmental, social, economic CORRECT ANSWERS What are the three
pillars of sustainability?
a) Equitability, justice, quality of life
b) Diversity, efficiency, toxicity
c) Reduce, reuse, recycle
d) Environmental, social, economic
b) 1 CORRECT ANSWERS The numbers 1 through 4 are used to identify four
different elements on the periodic table. Which element is expected to have 2+
charge when it forms an ion? (1 and 2 on left; 3 and 4
a) 4
b) 1
c) 2
d) 3
, d) Q CORRECT ANSWERS Which symbol(s) represent(s) elements in the noble
gas family?
a) X and Z
b) P and L
c) Y
d) Q
d) III and IV only CORRECT ANSWERS Which squares contain mixtures?
a) I, III, and IV only
b) I and IV only
c) II and III only
d) III and IV only
d) LiF CORRECT ANSWERS Which one of the following compounds is
considered to be an ionic compound?
a) NO
b) CCl4
c) PI3
d) LiF
d) 2.47 g/cm3 CORRECT ANSWERS What is the density of a block of material
that is 12 cm × 6 cm × 2 cm and has a mass of 356 g?
a) 3.56 g/cm3
b) 4.95 g/cm3
c) 1.00 g/cm3
d) 2.47 g/cm3
c) 6 CORRECT ANSWERS A computer chip was weighed and found to have a
mass of 23.3040 g. How many significant figures does this number have?
a) 7
b) 5
c) 6
d) 4
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