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

C.   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. 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.

A.   Treatment with slaked lime and alum

B.   Ozonation or chlorination

C.   Coarse screening

D.   Aeration

A.   It has not been contradicted by experiments.

B.   It summarizes a wide range of experimental results.

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

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

A.   Aluminum metal is a conductor of electricity.

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

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

D.   The element chlorine boils at -34.6 °C

A.   Compressible; brittle

B.   Good conductor of heat; takes shape of container

C.   Has definite shape and volume; not compressible

D.   Conducts electricity well; compressible

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

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

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

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

A.   0.942 g/mL

B.   1.16 g/mL

C.   0.862 g/mL

D.   2.32 g/mL

A.   83.3 mL

B.   83.25 mL

C.   0.300 mL

D.   3.330 mL

A.   Cellulose is not soluble in water.

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

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

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

A.   flammability

B.   density

C.   melting point

D.   atomic mass

E.   color

A.   Clean air

B.   An asphalt (blacktop) road

C.   Rubbing alcohol

D.   Sugar water

A.   HF

B.   S8

C.   F2

D.   H2

A.   A xenon atom

B.   A protein

C.   A muscle cell

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

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

A.   Bohr

B.   Dalton

C.   Heisenberg

D.   Einstein

E.   Demokritos

A.   Mg

B.   Hg

C.   Rg

D.   Cm

A.   Is malleable

B.   Forms alloys

C.   Conducts heat

D.   Has low density

A.   Ni, Ag, Au

B.   B, S, P

C.   Sc, Y, La

D.   Cl, N, O

A.   Cs

B.   Ba

C.   Sr

D.   Ca

A.   1.6 × 10–4 g

B.   16 g

C.   0.76 g

D.   76 g

E.   0.16 g

A.   It prevents the collapse of microtubules.

B.   It suppresses the activity of telomerase.

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

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