Chem 5
Intro Chemistry - Chapter 5. Practice Test.
- 1.What is the term for the weighted average mass of all the naturally occurring isotopes of an element?
- A.
Atomic notation
- B.
Atomic number
- C.
Atomic mass
- D.
Mass number
- E.
None of the above
- 2.What is the term for the region of very high density in the center of the atom?
- A.
A) atomic center
- B.
B) atomic core
- C.
C) atomic kernel
- D.
D) atomic nucleus
- E.
E) none of the above
- 3.What is the term for the value that indicates the number of protons for an atom of a given element?
- A.
A) atomic notation
- B.
B) atomic number
- C.
C) atomic mass
- D.
D) mass number
- E.
E) none of the above
- 4.What is the term for the atomic model that describes electrons circling the nucleus in an orbit of specific energy?
- A.
A) Bohr atom
- B.
B) Rutherford atom
- C.
C) Thomson atom
- D.
D) quantum mechanical atom
- E.
E) none of the above
- 5.What is the negatively charged subatomic particle having a negligible mass?
- A.
A) electron
- B.
B) neutron
- C.
C) proton
- D.
D) quark
- E.
E) none of the above
- 6.What is the term for the shorthand description of the arrangement of electrons by sublevels according to increasing energy?
- A.
A) atomic notation
- B.
B) atomic number
- C.
C) continuous spectrum
- D.
D) electron configuration
- E.
E) none of the above
- 7.What is the term for two atoms of the same element that differ by the number of neutrons in the nucleus?
- A.
A) atomic mass units
- B.
B) isotopes
- C.
C) nucleons
- D.
D) photons
- E.
E) none of the above
- 8.What is the term for the value that indicates the total number of protons and neutrons in an atom of a given element?
- A.
Atomic notation
- B.
Atomic number
- C.
Atomic mass
- D.
Mass number
- E.
None of the above
- 9.What is the neutral subatomic particle having an approximate mass of 1 amu?
- A.
Electron
- B.
Neutron
- C.
Proton
- D.
Quark
- E.
None of the above
- 10.What is the term for the spatial region about the nucleus of an atom where there is a high probability of finding an electron with a given energy?
- A.
Electron shell
- B.
Electron subshell
- C.
Orbital
- D.
Quantum level
- E.
None of the above
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