Physical Science, New York Edition

Chapter 17: Properties of Atoms and the Periodic Table

Self-Check Quiz.-Eng.

1.
The atomic mass of an element is __________ of that element.
A)the average mass of an atom
B)the number of protons plus the number of neutrons of an atom
C)the number of protons in each atom
D)the number of electrons in each atom
2.
The __________ of an element is the number of __________ of an atom of that element.
A)atomic mass, electrons in the nucleus
B)mass number, neutrons in the nucleus
C)mass number, protons plus neutrons in the outermost energy level
D)atomic number, protons in the nucleus
3.
The __________ of an atom is the number of neutrons plus protons.
A)atomic number
B)nucleus number
C)mass number
D)half-life
4.
__________ are atoms of the same element that have different numbers of neutrons.
A)Compounds
B)Isotopes
C)Alpha particles
D)Beta particles
5.
The atomic number of manganese is 25; its mass number is 55. How many neutrons does an atom of manganese have in its nucleus?
A)25
B)30
C)55
D)80
6.
The mass of an electron is __________.
A)negligible
B)the mass of the neutrons plus the mass of the protons
C)equal to the mass of a proton
D)equal to the mass of the nucleus
7.
The mass of a proton is measured in __________.
A)nanograms
B)microns
C)atomic mass units
D)minutiae
Physical Science - New York Edition
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