Navigation » List of Schools » Prince George Community College » Chemistry » Chem 1010 – General Chemistry 1 » Fall 2021 » CH1 The Nature of Chemistry (2)
Below are the questions for the exam with the choices of answers:
Question #1
A It cross-links DNA at critical locations to prevent transcription.
B It intercalates between base pairs to stiffen the DNA strand.
C It suppresses the activity of telomerase.
D It prevents the collapse of microtubules.
Question #2
A 1.5 × 10–4 g
B 15 g
C 0.73 g
D 73 g
E 0.15 g
Question #3
A Ca
B Ba
C Sr
D Rb
Question #4
A C, S, P
B F, Na, Co
C Zn, Cd, Al
D Cl, N, O
Question #5
A Is malleable
B Conducts heat
C Conducts electricity
D Has low density
Question #7
A Dalton
B Thomson
C Bohr
D Demokritos
E Kelvin
Question #8
A Heat flows from a body of higher temperature to one of lower temperature.
B Temperature can be measured in Kelvin, centigrade, or Fahrenheit degrees with equal precision.
C Temperature is a measure of how vigorously the particles in the sample are rotating, vibrating, or moving about.
D Temperature indicates the amount of heat present in the sample whose temperature was measured.
Question #9
A An oxygen atom
B A muscle cell
C A water molecule
D A protein
Question #11
A Rubbing alcohol
B Distilled water
C An asphalt (blacktop) road
D Salt water
Question #12
A Melting an ice cube
B Grinding iron into filings
C Dissolving table salt into water
D Hard-boiling an egg in a pan of hot water
Question #13
A Table salt is soluble in water.
B Acetylene, C2H2, burns in air to form carbon dioxide, CO2, and water, H2O.
C Water boils at 100°C.
D The compound H2O has a density of 0.998 g/mL at 20°C.
Question #14
A 1012 pm / 1 m
B 109 pm / 1 m
C 1015 pm = 1 mm
D 1 pm / 1012 m
Question #15
A 2.33 g/mL
B 0.929 g/mL
C 0.860 g/mL
D 1.16 g/mL
Question #16
A 72 °C
B 22 °C
C 37 °C
D 98 °C
Question #17
A Physical properties depend on the mass of the material being considered.
B The measurement of physical properties always involves a phase change.
C The measurement of physical properties does not break any bonds.
D One important physical property is whether a substance is degraded by exposure to oxygen.
Question #18
A Sodium chloride is soluble in water.
B Carbon has six protons.
C Hydrogen is found as a diatomic molecule.
D Water has a freezing point of 32°F.
Question #19
A All the answers are correct
B It has not been contradicted by experiments.
C It predicts unknown results.
D It summarizes a wide range of experimental results.
Question #20
A Treatment with slaked lime and alum
B Tank storage
C Aeration
D Ozonation or chlorination
Question #21
A Training in chemistry sharpens one’s ability to think quantitatively, abstractly, and nanoscopically.
B High performance in chemistry classes is a strong indicator of potential success in fields such as medicine.
C Chemistry, because it focuses on matter, is the foundation of all areas of science.
D All the answers are true
