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X Chapter 4 Test Review. The Atomic Theory. The smallest particle that still retains the property of an element is called what? A. neutron B. atom C. electron D. molecule. In the Schrödinger model, what is the name for where an electron is found 90% of the time? Energy level Isotope - PowerPoint PPT Presentation
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X Chapter 4 Test Review
The Atomic Theory
The smallest particle that still retains the property of an element is called what?
A. neutronB. atomC. electronD. molecule
In the Schrödinger model, what is the name for where an electron is found 90% of the time?
A.Energy levelB.IsotopeC.Ground stateD.Orbital
The higher energy level for an electron is called what in the Bohr model?
A. ground stateB. orbitalC. excited stateD. energy level
What must be equal in a neutral atom?
A. Neutrons and protonsB. Electrons and neutronsC. Protons and electrons
Atoms with a charge are called what?
A. IonsB. CationsC. AnionsD. Isotopes
In the isotope notation shown below, what does the Z and A stand for?
A. Z = atomic symbol, A = atomic #
B. Z = mass #, A = atomic #C. Z = mass #, A = atomic symbolD. Z = atomic #, A = mass #
Z A X
Who discovered the electron?
A. JJ ThomsonB. Robert MillikanC. Ernest RutherfordD. James Chadwick
Who discovered the nucleus?
A. JJ ThomsonB. Robert MillikanC. Ernest RutherfordD. James Chadwick
What is the mass number if an atom has 14 neutrons, 15 protons, and 16 electrons?
A. 45B. 31C. 30D. 29
How many protons, neutrons, and electrons are in the following sample?
A. p+ = 35, n = 45, e- = 80B. p+ = 35, n = 80, e- = 35C. p+ = 45, n = 35, e- = 45D. p+ = 35, n = 45, e- = 35
8035
Br
How many protons, neutrons, and electrons are in the following sample?
A. p+ = 27, n = 32, e- = 27B. p+ = 32, n = 27, e- = 32C. p+ = 27, n = 32, e- = 25D. p+ = 27, n = 59, e- = 25
5927
Co2+
What is the isotope notation for phosphorous-31?
A. 3115P
B. 1531P
C. 4615P
D. 3015P
What is Rutherford’s famous experiment in which he discovered the nucleus?
A. Oil drop experimentB. Cathode ray tube
experimentsC. Gold-foil experimentD. Plum pudding experiment
Who is credited with the plum pudding model of the atom?
A. JJ ThomsonB. Robert MillikanC. Ernest RutherfordD. James Chadwick
Who discovered the neutron?
A. JJ ThomsonB. Robert MillikanC. Ernest RutherfordD. James Chadwick
What is the atomic number equal to?
A. The # of electrons in the atom
B. Sum of protons & neutrons in the atom
C. The mass numberD. The # of protons in the
nucleus
What is the mass number equal to?
A. The # of protons in the nucleus
B. The sum of the protons & neutrons in the nucleus
C. The # of electrons in the atom
D. The charge on an ion
Which of the following are found in the nucleus of an atom?
A. protonsB. neutronsC. electronsD. More than one of the aboveE. None of the above
Which of the following pairs below are isotopes?
A. Carbon-12 and Carbon-13B. Uranium-238 and
Neptunium-238C. Chlorine-35 and Fluorine-19
What is the atomic mass on the periodic table equal to?
A. The weighted average of the masses of all naturally occurring isotopes
B. The sum of the protons & neutrons in the nucleus
C. The number of protons in the nucleus
Schrodinger is credited with which model of the atom?
A. The plum pudding modelB. The billiard ball modelC. The quantum mechanical
modelD. The Bohr model
How many protons are in the nucleus of a nitrogen atom?
A. 14 protonsB. 21 protonsC. 7 protonsD. 8 protons
How many neutrons are in the nucleus of a Iodine-127 atom?
A. 53 neutronsB. 127 neutronsC. 180 neutronsD. 74 neutrons
What does the 34 represent in sulfur-34?
A. Atomic numberB. Mass numberC. Atomic massD. Electrons in the atom
If an iron ion has a charge of +2, how many electrons does the ion have?
A. 24 electronsB. 26 electronsC. 28 electrons
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