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

D.   Chemistry, because it focuses on matter, is the foundation of all areas of science

A.   Aeration

B.   Treatment with slaked lime and alum

C.   Coarse screening

D.   Ozonation or chlorination

A.   It summarizes a wide range of experimental results.

B.   It predicts unknown results and 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.   A chemical compound containing cobalt and chlorine is blue.

B.   The element chlorine boils at -34.6 °C

C.   Aluminum metal is a conductor of electricity.

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.   Good conductor of heat; takes shape of container

D.   Conducts electricity well; compressible

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

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

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.   2.32 g/mL

B.   0.942 g/mL

C.   1.16 g/mL

D.   0.862 g/mL

A.   3.330 mL

B.   83.3 mL

C.   0.300 mL

D.   83.25 mL

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

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

C.   Cellulose is not soluble in water.

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

A.   atomic mass

B.   flammability

C.   melting point

D.   color

E.   density

A.   Sugar water

B.   Rubbing alcohol

C.   An asphalt (blacktop) road

D.   Clean air

A.   HF

B.   S8

C.   H2

D.   F2

A.   A xenon atom

B.   A muscle cell

C.   A sugar molecule

D.   A protein

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

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

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

D.   Temperature is a measure of how vigorously the particles in the sample are rotating, vibrating, or moving about.

A.   Dalton

B.   Einstein

C.   Bohr

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.   B, S, P

B.   Cl, N, O

C.   Ni, Ag, Au

D.   Sc, Y, La

A.   Ba

B.   Cs

C.   Sr

D.   Ca

A.   0.16 g

B.   0.76 g

C.   76 g

D.   16 g

E.   1.6 × 10–4 g

A.   It suppresses the activity of telomerase.

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

C.   It prevents the collapse of microtubules.

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