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

B.   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. 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.

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

A.   Coarse screening

B.   Ozonation or chlorination

C.   Treatment with slaked lime and alum

D.   Aeration

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

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

C.   Aluminum metal is a conductor of electricity.

D.   The element chlorine boils at -34.6 °C

A.   Has definite shape and volume; not compressible

B.   Good conductor of heat; takes shape of container

C.   Conducts electricity well; compressible

D.   Compressible; brittle

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

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

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

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

A.   2.32 g/mL

B.   0.862 g/mL

C.   0.942 g/mL

D.   1.16 g/mL

A.   0.300 mL

B.   3.330 mL

C.   83.25 mL

D.   83.3 mL

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

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

C.   Cellulose is not soluble in water.

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

A.   color

B.   melting point

C.   density

D.   atomic mass

E.   flammability

A.   Clean air

B.   An asphalt (blacktop) road

C.   Sugar water

D.   Rubbing alcohol

A.   S8

B.   HF

C.   F2

D.   H2

A.   A protein

B.   A sugar molecule

C.   A xenon atom

D.   A muscle cell

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

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

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

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

A.   Heisenberg

B.   Einstein

C.   Bohr

D.   Dalton

E.   Demokritos

A.   Cm

B.   Mg

C.   Rg

D.   Hg

A.   Has low density

B.   Is malleable

C.   Forms alloys

D.   Conducts heat

A.   B, S, P

B.   Cl, N, O

C.   Ni, Ag, Au

D.   Sc, Y, La

A.   Cs

B.   Ca

C.   Sr

D.   Ba

A.   1.6 × 10–4 g

B.   76 g

C.   0.16 g

D.   16 g

E.   0.76 g

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

B.   It prevents the collapse of microtubules.

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

D.   It suppresses the activity of telomerase.