Chemistry Concepts and Applications

Section 1: Present-Day Atomic Theory

Self Check Quizzes

1
The light emitted by the gas in a neon sign is __________.
A)an electron
B)an emission spectrum
C)a filament
D)an incandescent light
2
Which color of visible light has the longest wavelength?

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A)blue
B)green
C)red
D)violet
3
The two rows beneath the main body of the periodic table contain the __________.
A)alkali metals
B)halogens
C)inner transition elements
D)noble gases
4
The elements in Groups 1, 2, and 13-17 are called the __________.
A)alkali metals
B)main group elements
C)noble gases
D)transition elements
5
The diagram shows that the hydrogen atom has __________.

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A)one electron, which can be found at different locations within the atom.
B)millions of electrons, all scattered about the atom.
C)two electrons, which can be found at different locations within the atom
D)no electrons
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