WorksheetsAtomic Structure and AAM
Total questions: 25
Worksheet time: 13mins
Which subatomic particles are in the nucleus of the atom?
Protons
Neutrons
Electrons
Protons and Neutrons
Where are the electrons located in the atom?
In the electron cloud
In an area that is mostly empty space
Outside the nucleus
All of the above are correct
What subatomic particles contribute to the mass of an atom? Check all that apply.
Protons
Neutrons
Electrons
None of the above is correct
What is the atomic number?
The number of protons in an atom
The number of electrons in an atom
The number of neutrons in an atom
None of the above is correct
What subatomic particle determines the identity of the element?
Protons
Neutrons
Electrons
None of the above is correct
What subatomic particle is responsible for various isotopes of an element?
Protons
Neutrons
Electrons
None of the above is correct
What is the mass number of an atom?
The number of protons plus electrons
The number of protons plus neutrons
The number of electrons plus neutrons
None of the above is correct
In an atom of Carbon-14, what does the 14 represent?
The number of protons
The atomic number
The number of neutrons
The mass number
What do we call atoms of the same element that have different numbers of neutrons?
ions
isotopes
In an atom of Calcium-42, how many neutrons are present?
20
22
40
42
What do we call a charged atom?
ion
isotope
How many electrons are in Mg+2?
10
12
14
24
What do you get when a neutral atom either loses or gains electrons?
ion
isotope
How many neutrons are in Carbon-13?
6
7
8
13
True or False: To find average atomic mass, add up all the mass numbers of the isotopes and divide by the number of isotopes?
True
False
If the average atomic mass of an element is 33.046, which isotope is more in abundance?
The one with a mass number of 33
The one with a mass number of 35
The one with a mass number of 36
The one with a mass number of 38
What is average atomic mass?
An average of the mass numbers of isotopes
A weighted average of the masses of the isotopes given their relative abundance in nature?
An average of the atomic numbers of all isotopes
A weighted average of the atomic numbers of all isotopes given their relative abundance in nature
How do you determine ionic charge?
Neutrons minus protons
Neutrons plus electrons
Protons plus electrons
Protons minus electrons
Who discovered the electron and developed the Plum Pudding model of the atom?
Bohr
Rutherford
Thomson
Dalton
Who came up with the first atomic theory and thought that atoms were indivisible balls?
Bohr
Rutherford
Thomson
Dalton
Who used the gold foil experiment to determine the presence of a dense, positive nucleus?
Bohr
Rutherford
Thomson
Dalton
Who discovered that the atom was mostly empty space?
Bohr
Rutherford
Thomson
Dalton
Which scientist calculated the probability plots of locating electrons and theorized the quantum mechanical model?
Thomson
Schroedinger
Bohr
Chadwich
Who theorized that electrons inhabit discrete energy levels?
Bohr
Rutherford
Thomson
Dalton
Who theorized that electrons orbit the nucleus and developed the planetary model?
Bohr
Rutherford
Thomson
Dalton
