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17 Cards in this Set

  • Front
  • Back
what is a mixture?
a physical blend of two or more substances that are not chemically combined
How many energy sublevels are in the second principal energy level?
2
what is pure chemistry?
pursuit of chemical knowledge for its own sake
what are the 5 types of chemistry?
organic, inorganic, biochemistry, analytic, physical
what is not matter?
energy
what is applied chemistry?
research that is directed toward a practical goal or application
what is the scientific method?
logical, systematic approach to the solution of a scientific problem; steps in the scientific method include making observations, testing hypotheses, and developing theories.
what is scienitific law?
a concise statement that summarizes the results of many observations and experiments
what are the states of matter?
solid, liquid, gas
what are some examples of physical change?
tearing up a piece of paper
what are some examples of chemical change?
burning a piece of paper
what is accuracy?
close to right answer
what is precision?
repeated measurements to-- closeness
what does the quantum mechanical model involve?
the probability of finding an electron in a certain position
Which scientist developed the quantum mechanical model of the atom?
Erwin Schrodinger
Which color of visible light has he shortest wavelength?
green
How does the speed of visible light compare with the speed of gamma rays, when both speeds are measured in a vacuum?
the speeds are the same