Download Date Period - Swift Classroom

Name _________________________________________ Date ____________________ Period ___________
NOTES: The Periodic Table
Origin:
 __________________________________ searched for a meaningful way to organize the elements
 He put the elements in order by _______________________
 He found that other properties such as _________________________, _______________________,
and the ability to ______________________ with other elements seemed to ____________________
over and over.
 This repeating pattern is called _____________________ and he called his table the periodic table of
elements.
Arrangement of the Periodic Table:
 Each element is identified by the number of _____________________ it has in its nucleus (unique to
each element)
 The number of protons in an atom of an element is the _________________________________
o Because the number of protons always equals the number of electrons (atoms are
__________________ __________________), the atomic number tells you both the number of
________________________ as well as the number of _________________________
o The modern periodic table is arranged in order of ________________________ atomic number
 Sometimes atoms of the same element can have different numbers of _______________________.
o Since neutrons have __________________________, the overall charge of the atom is not
changed by the extra neutrons.
o _______________________ are atoms of the same element that have
_______________________ numbers of neutrons.
o Remember the ____________________________ of an atom is the number of
________________ plus the number of _______________________. If some atoms have
different numbers of neutrons, how can we calculate the mass number?
_____________________________ is the average mass of the isotopes of an element found in
nature.
Periods of Elements:
 The repeat of a pattern is called a __________________________.
 On the periodic table of elements, each __________________ begins as a pattern of
_________________ and ___________________ properties starts to repeat itself.
Families of Elements:
 On the periodic table, elements in the same column are called a
_________________________________.
 In a family, all elements have similar ______________________ and ______________________
properties.
How to read the Periodic Table: