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WorksheetsPeriodic Table and Atomic History
Total questions: 30
Worksheet time: 15mins
Select the main three particles in an atom
Proton
Nucleus
Neutron
Electron
Which particle has a positive charge?
Proton
Neutron
Electron
Which particle has a negative charge?
Proton
Neutron
Electron
Which particle has a no charge?
Proton
Neutron
Electron
Which particle(s) have a mass of 1 AMU?
Proton
Neutron
Electron
Which particle(s) have a mass of 0.0005 AMU, or 1/2000th a proton?
Proton
Neutron
Electron
Which particle(s) are located in Shells or Orbitals?
Proton
Neutron
Electron
Which particle(s) are located in the nucleus?
Proton
Neutron
Electron
Niehls Bohr said:
Atoms are a solid sphere
Electrons are located in orbitals
The nucleus has a positive charge after conducting the gold-foil experiment
Which scientist discovered the electron in his cathode ray tube experiment?
Chadwick
Rutherford
Dalton
Thomson
Which scientist discovered the neutron?
Chadwick
Rutherford
Dalton
Thomson
Which scientist claimed the atom was a solid sphere?
Chadwick
Rutherford
Dalton
Thomson
Most (about 2/3) elements are _____________
Nonmetals
Carbon
Metalloids
Metals
Elements that are on the boarder between the metals and nonmetals are:
Nonmetals
Carbon
Metalloids
Metals
Nonmetals are found in the _______________ of the periodic table
Bottom Left
Middle (Families 6-11)
Bottom
Top Right
An elements name is represented by the
chemical symbol
nucleus
protons
atom
(Select 2) Chemical symbols:
start with a capital letter
start with a lowercase letter
and sometimes have a capital letter next
and sometimes have a lowercase letter next
Select a possible chemical symbol:
AA
Aa
aA
aa
Aaa
The atomic number of an element is:
The number of neutrons
the number of electrons
the number of protons
the total number of neutrons and protons
The mass number of an element is:
The number of neutrons
the number of electrons
the number of protons
the total number of neutrons and protons
Which of the following are found in the nucleus?
Atoms
Protons
Neutrons
Electrons
Electrons are found in the electron cloud. The electron cloud is
Outside of the nucleus
an area within the nucleus
Like a storm cloud
the center of the atom
"Periods" on the periodic table are also called
Columns
Groups
Families
Rows
(select all that apply) Vertical groupings on the periodic table are called
Columns
Periods
Families
Rows
(select all that are true) Neutrons provide a "strong force" or "atomic glue" for an atoms. Why is this important?
They explained why the nucleus did not explode
They show why some elements are radioactive (break apart more easily)
they explain why it is so hard to move a single atom
Which element would have more protons: Carbon or Magnesium?
Carbon - due to the atomic number being larger
Carbon - due to the smaller atomic number
Magnesium - due to the atomic number being larger
Magnesium - due to the atomic mass being larger
On your periodic table, find Calcium (Ca). Calcium is in:
Period 1, Group 2
Period 2, Group 4
Period 3, Group 2
Period 4, Group 2
Period 1, Group 17
The periodic table
show the period times for class
is a table that is only periodically there
helps organize the elements based on atomic number and properties
(select multiple) The most modern atomic model includes which of the following:
the nucleus contains over 99.99% of the total mass of an atom
Neutrons are orbiting the nucleus
Electrons are in a 3D cloud outside the nucleus
Atoms are mostly empty space
The nucleus contains negatively charged neutrons
The particle that is considered the "standard" is the
Neutron
Proton
Electron
Beta
