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.   Treatment with slaked lime and alum

B.   Ozonation or chlorination

C.   Aeration

D.   Coarse screening

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

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

B.   Aluminum metal is a conductor of electricity.

C.   The element chlorine boils at -34.6 °C

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

A.   Has definite shape and volume; not compressible

B.   Compressible; brittle

C.   Conducts electricity well; compressible

D.   Good conductor of heat; takes shape of container

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

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

A.   0.942 g/mL

B.   2.32 g/mL

C.   1.16 g/mL

D.   0.862 g/mL

A.   83.3 mL

B.   3.330 mL

C.   0.300 mL

D.   83.25 mL

A.   Cellulose is not soluble in water.

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

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

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

A.   melting point

B.   color

C.   density

D.   flammability

E.   atomic mass

A.   An asphalt (blacktop) road

B.   Clean air

C.   Sugar water

D.   Rubbing alcohol

A.   H2

B.   HF

C.   F2

D.   S8

A.   A muscle cell

B.   A xenon atom

C.   A protein

D.   A sugar molecule

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

B.   Temperature indicates the amount of heat present in the sample whose temperature was measured.

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.

A.   Einstein

B.   Bohr

C.   Dalton

D.   Heisenberg

E.   Demokritos

A.   Mg

B.   Rg

C.   Hg

D.   Cm

A.   Has low density

B.   Forms alloys

C.   Conducts heat

D.   Is malleable

A.   Cl, N, O

B.   B, S, P

C.   Ni, Ag, Au

D.   Sc, Y, La

A.   Ca

B.   Cs

C.   Ba

D.   Sr

A.   76 g

B.   0.76 g

C.   1.6 × 10–4 g

D.   0.16 g

E.   16 g

A.   It cross-links DNA at critical locations to prevent transcription.

B.   It prevents the collapse of microtubules.

C.   It suppresses the activity of telomerase.

D.   It intercalates between base pairs to stiffen the DNA strand.