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