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