One problem with the planetary model of the atom is that it
A) cannot explain boiling, freezing, and other transitions between the three common states of matter.
B) cannot explain electrical effects.
C) cannot explain the observed spectrum of the various types of atoms.
C
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On the Kelvin scale the temperature is proportional to the average kinetic energy of the atoms or molecules whose temperature is being measured
a. True b. False Indicate whether the statement is true or false
Which of the following polyatomic ions has a single minus charge?
a. Acetate b. Sulfate c. Phosphate d. Ammonium
If a two–body collision is not head–on, then we may always assume that:
a. momentum is conserved. b. kinetic energy is conserved. c. neither momentum nor kinetic energy are conserved. d. both momentum and kinetic energy are conserved.
Relative to the stars, the Moon moves from ________ to ________.
A. east; west B. west; east