Chemistry and Elements Review Sheet – Periods 4/5
1. Know the following scientists’ models of the atom, and the experiments that caused the models to change. Be able to
put the models in order. Be able to explain the significance of why each model was different from preceding models.
Democritus, Dalton, Thomson/plum pudding, Rutherford, Bohr, Chadwick, modern model.
2. Using a periodic table (element symbols, atomic mass and atomic number only), be able to determine the following for
ANY element: atomic mass, atomic number, number of protons, number of neutrons, number of electrons, number of
electron shells, family and family properties, whether is it is a metal, nonmetal, or metalloid, and the resultant
properties, relative atomic size, relative ionic size, and relative reactivity.
3. Know why the period table is arranged according to atomic number, and explain the role of proton, neutrons and
electrons within the atom. Be able to explain why the periodic table has decimal numbers for mass, while individual
atoms cannot.
4. Using a periodic table (element symbols, atomic mass and atomic number only), be able to determine Bohr models and
Lewis dot structure of the neutral atom and common ion formed (if any) for the first 18 elements.
5. Be able to explain how negative and positive ions are formed, with examples.
6. Define, draw and give examples of the following: ionic bond, covalent bond, single, double and triple bonds.
7. Be able to define, explain or give examples of the terms radioactive decay, half-life, isotope. Be able to calculate the
half-life of an element from a graph, and able to estimate the decay time/remaining sample when given the half-life of
the isotope.
Chemistry and Elements Review Sheet – Periods 1/2/6
1. Know the following scientists’ models of the atom, and the experiments that caused the models to change. Be able to
put the models in order. Be able to explain the significance of why each model was different from preceding models.
Democritus, Dalton, Thomson/plum pudding, Rutherford, Bohr, Chadwick, modern model.
2. Using a periodic table (element symbols, atomic mass and atomic number only), be able to determine the following for
ANY element: atomic mass, atomic number, number of protons, number of neutrons, number of electrons, number of
electron shells, family and family properties, whether is it is a metal, nonmetal, or metalloid, and the resultant
properties, relative atomic size, relative ionic size, relative ionization energy and relative reactivity.
3. Know why the period table is arranged according to atomic number, and explain the role of proton, neutrons and
electrons within the atom. Be able to explain why the periodic table has decimal numbers for mass, while individual
atoms cannot.
4. Using a periodic table (element symbols, atomic mass and atomic number only),be able to determine Bohr models and
Lewis dot structure of the neutral atom and common ion formed (if any) for the first 18 elements.
5. Be able to explain how negative and positive ions are formed, with examples.
6. Define, draw and give examples of the following: ionic bond, covalent bond, single, double and triple bonds. Be able to
determine the chemical formula of an ionic compound when given the charges of the component ions.
7. Be able to define, explain or give examples of the terms radioactive decay alpha particle, beta particle, isotope. Be able
to read a graph of radioactive decay and predict outcomes of alpha and beta decay. Know what a half life is, and be able
estimate the decay time/remaining sample when given the half-life of the isotope.
Periodic Table Practice
When given any ONE of the first 6 columns, you should be able to complete ALL columns of the table below for ANY ELEMENT
EXCEPT transition metals, and ALL columns EXCEPT the common ion formed, Lewis structure, and number of valence
electrons for transition metals. Pick elements at random and practice!
Symbol
Name
Atomic
Mass
Atomic
#
# of e(atom)
# of
p+
#
of
no
Family
# of
orbitals
# of
valence
e-
Lewis
Structure
(atom)
Common
ion
formed
Type(s) of
bond(s)
formed
metal,
nonmetal,
metalloid?