What about the periodic table of
You will learn about the organization of
the periodic table, how to read and
interpret the elements and how to
determine how many protons,
neutrons, and electrons will be in each
Also, you will learn some study skills to
help guide you with your homework
and preparation for tests.
The element song
Periodic Table- A table which
organizes chemical elements
Families/Groups- The vertical columns in
periodic table. Each member shares similar
Periods- The horizontal row in the periodic
table. Each member contains the same
number of electron clouds.
Arranged in order of increasing atomic number
Periods Families or Groups
Metals Nonmetals gases
(A substance consisting of a
EachELEMENT has it’s own properties
such as :
For further information about an element
Atom – Smallest particle of an element
Nucleus – Central region of an atom
that contains the protons and neutrons
of an atom. Holds the most weight but
is very small in size.
Proton – A subatomic particle located
in the nucleus with a positive charge.
Neutron– A subatomic particle located
in the nucleus with a neutral charge.
Electron– A subatomic particle that
spins around an atom’s nucleus in
orbits called shells with a negative
Electron cloud – Region of negative
charge surrounding an atomic nucleus
that is associated with an atomic
Chemical Symbol - Abbreviation given
to the names of the element
Atomic number - number of protons
contained in an atom. Used to
name/identify an atom
Atomic weight – Average weight of the
protons and neutrons of an atom
8 Found on
Atomic Number =
number of protons
Atomic Weight =
number of protons + number of neutrons
Number of electrons
How can we determine the number of
neutrons of a particular element from
the information given on the periodic
Atomic weight (or mass) =
number of protons +
number of neutrons
Atomic Weight =
number of protons +
19 number of neutrons
39.0938 = 19 + neutrons
There cannot be 0.0928 of a
39.0938 neutron, so this number is rounded
to 20 neutrons.
Practice, Practice, Practice!!
To help you understand the periodic table
and the math associated with it, check out
Questions and Answers
Lets play a game to help you learn!
Element Math Game
Read Chapter 2 in the Chemistry
Text book and do this worksheet.
Here is some help……………
Identifying Key Concepts
•EXAMINE the text structure for any
elements that the writer may have used
to indicate major division in the subject
•DETERMINE which sentence in a
paragraph is the topic sentence
•Often the first sentence
LEARN to identify statements that “forecast”
key concepts and RECOGNIZE that
transitions may sometimes help to identify a
Is this an introduction into a key concept?
EXAMINE the summary statements in the
paragraphs and/or the conclusions that
summarize each section of the reading.
Will help with condensing the key
7-8 grade general science chemistry students
Given an element, the students will be able to determine its atomic mass, atomic
number, number of protons, number of neutrons, and number of electrons with
Given an element, the student will be able to determine if it is a light metal, heavy
metal, nonmetal, or gas and know the period and family it is in by using the period
table with 90% accuracy.
Given a diagram of an atom, the students will be able to determine which element
it is by observing the number of electrons, protons, and neutrons by using the
periodic table with 90% accuracy.
I will use a website which has a game on it involving the math of the periodic table
to determine the class’s understanding of the elements.
A worksheet will be given to the students that will be filled out after reading
chapter two in the text which involves concepts that were discussed today.