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