A.   High performance in chemistry classes is a strong indicator of potential success in fields such as medicine.

B.   Chemistry, because it focuses on matter, is the foundation of all areas of science. High performance in chemistry classes is a strong indicator of potential success in fields such as medicine. 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.   Training in chemistry sharpens one's ability to think quantitatively, abstractly, and nanoscopically.

A.   Aeration

B.   Coarse screening

C.   Treatment with slaked lime and alum

D.   Ozonation or chlorination

A.   It predicts unknown results and it summarizes a wide range of experimental results.

B.   It summarizes a wide range of experimental results.

C.   It has not been contradicted by experiments.

D.   It has not been contradicted by experiments, it predicts unknown results and it summarizes a wide range of experimental results.

A.   The element chlorine boils at -34.6 °C

B.   Aluminum metal is a conductor of electricity.

C.   A chemical compound containing lead and sulfur forms shiny, plate-like, yellow crystals.

D.   A chemical compound containing cobalt and chlorine is blue.

A.   Compressible; brittle

B.   Conducts electricity well; compressible

C.   Good conductor of heat; takes shape of container

D.   Has definite shape and volume; not compressible

A.   The measurement of physical properties always involves a phase change.

B.   Physical properties depend on the mass of the material being considered.

C.   One important physical property is whether a substance is degraded by exposure to oxygen.

D.   The measurement of physical properties does not break any bonds.

A.   1.16 g/mL

B.   0.862 g/mL

C.   0.942 g/mL

D.   2.32 g/mL

A.   83.3 mL

B.   0.300 mL

C.   83.25 mL

D.   3.330 mL

A.   Dry Ice sublimes (changes directly from a solid to a gas) at -78°C.

B.   Cellulose is not soluble in water.

C.   The compound C2H6O has a density of 0.789 g/mL at 20°C.

D.   Acetylene, C2H2, burns in air to form carbon dioxide, CO2, and water, H2O.

A.   density

B.   color

C.   atomic mass

D.   flammability

E.   melting point

A.   An asphalt (blacktop) road

B.   Clean air

C.   Rubbing alcohol

D.   Sugar water

A.   F2

B.   H2

C.   HF

D.   S8

A.   A protein

B.   A muscle cell

C.   A sugar molecule

D.   A xenon atom

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.   Heat flows from a body of higher temperature to one of lower temperature.

D.   Temperature can be measured in Kelvin, centigrade, or Fahrenheit degrees with equal precision.

A.   Demokritos

B.   Heisenberg

C.   Bohr

D.   Einstein

E.   Dalton

A.   Hg

B.   Rg

C.   Cm

D.   Mg

A.   Forms alloys

B.   Is malleable

C.   Has low density

D.   Conducts heat

A.   Cl, N, O

B.   Ni, Ag, Au

C.   B, S, P

D.   Sc, Y, La

A.   Sr

B.   Cs

C.   Ba

D.   Ca

A.   76 g

B.   1.6 × 10–4 g

C.   0.16 g

D.   0.76 g

E.   16 g

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.