CHEM 1110: Final Exam Review (Past Exam Questions) with Answers
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Course
CHEM 1110
Institution
CHEM 1110
CHEM 1110: Final Exam Review (Past Exam Questions) with Answers
Which of the following is not a pure substance?
a.) air
b.) sodium chloride
c.) water
d.) zinc ANSWER a.) air
The result of the operation (23.259 - 3.000)*0.01010 should be reported as:
a.) 0.2
b.) 0.20
c.) 0.205
d.) 0.20...
CHEM 1110: Final Exam Review (Past Exam Questions) with Answers
Which of the following is not a pure substance?
a.) air
b.) sodium chloride
c.) water
d.) zinc ANSWER a.) air
The result of the operation (23.259 - 3.000)*0.01010 should be reported as:
a.) 0.2
b.) 0.20
c.) 0.205
d.) 0.2046 ANSWER d.) 0.2046
The number 0.00003461 in scientific notation is:
a.) 3.461 x 10^-4
b.) 3.461 x 10^-5
c.) 3.461 x 10^5
d.) 34.61 x 10^-5 ANSWER b.) 3.461 x 10^-5
300 K equals
a.) 573 °C
b.) 199 °C
c.) 27 °C
d.) 42 °C ANSWER c.) 27 °C Which of the following pairs of compounds can be used to illustrate the law of multiple proportions?
a.) NH and NH Cl ₄ ₄
b.) ZnO and ZnCl ₂ ₂
c.) NO and NO ₂
d.) CH and CO ANSWER c.) NO and NO ₄ ₂ ₂
Which one of the following statements about atomic structure is false?
a.) The number of protons and neutrons is always the same in the neutral atom.
b.) Almost all of the mass of the atom is concentrated in the nucleus.
c.) The protons and neutrons in the nucleus are very tightly packed.
d.) The electrons occupy a very large volume compared to the nucleus. ANSWER a.) The number of protons and neutrons is always the same in the neutral atom.
An ion is formed
a.) by either adding or subtracting protons from the atom
b.) by either adding or subtracting electrons from the atom
c.) by either adding or subtracting neutrons from the atom
d.) all of these are true ANSWER b.) by either adding or subtracting electrons from the atom
Experiments related to the confirmation of the existence of electrons in atoms involved which
of the following:
a.) radioactivity
b.) conservation of mass
c.) the cathode ray tube
d.) α particle scattering from gold foil ANSWER c.) the cathode ray tube
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