Atomic Structure Question Preview (ID: 16778)


Questions Are Based On Texas 8th Grade Science Objectives. TEACHERS: click here for quick copy question ID numbers.

Which of these is NOT found in the nucleus of an atom?
a) Neutrons
b) Electrons
c) The mass of an atom
d) Protons

Which part of the atom determines how it will react with other elements?
a) Neutrons in the nucleus
b) Protons in the nucleus
c) Valance electrons
d) Inner most electrons.

Which of the following statements are incorrect on how the mass of a single neutron, proton, and electron relate to each other?
a) The mass of the neutrons equals the mass of a proton.
b) The mass of an electron is less than the mass of a proton.
c) The mass of an electron equals the mass of a proton.
d) The mass of a neutron is greater than the mass of an electron.

Which of the following best describes one of the subatomic particles that could be found within the nucleus?
a) It has mass but no charge.
b) It has no mass but a positive charge.
c) It has a large mass and a negative charge.
d) It has no mass and an equal number of positive and negative charges.

Which part of the atom is MOST important in determining an element's identity?
a) Electrons
b) Protons
c) Valance Electrons
d) Neutrons

Which statement is true of the properties of Lithium, Sodium, and Potassium?
a) They have no luster.
b) They have low heat conductivity.
c) They are highly reactive.
d) They have low electrical conductivity.

Which of the following is the same for both Nitrogen and Phosphorus?
a) Atomic mass
b) Total mass of neutrons.
c) Number of valence electrons.
d) Number of filled energy levels.

Which of the following atoms would have a valence of 2?
a) Na
b) Mg
c) F
d) Ar

Which of the following statements best explains why potassium (K) reacts easily with bromine (Br)?
a) Potassium and Bromine both have valence electrons in the fourth energy level.
b) Potassium and Bromine have the same number of electrons in their highest energy levels.
c) Potassium has one valence electron and bromine has seven valence electrons.
d) Potassium needs one electron to complete its highest energy level, and bromine has an extra electron.

Which of the following could describe an atom with an atomic number of 9?
a) 10 protons, 9 neutrons
b) 9 protons, 10 neutrons
c) 4 protons, 5 neutrons
d) 3 protons, 3 neutrons

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