1. The Periodic
Table of Elements

2. What about the periodic table of elements?
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 atom.
Also, you will learn some study skills to help guide you with your homework and preparation for tests.

3. An introduction…….
The element song

4. Periodic Table- A table which organizes chemical elements

5. Families/Groups- The vertical columns in periodic table
Families/Groups- The vertical columns in periodic table. Each member shares similar chemical properties.
Periods- The horizontal row in the periodic table. Each member contains the same number of electron clouds.
Arranged in order of increasing atomic number

6. Families or Groups
Periods

7. Light metals Heavy Metals Nonmetals Inert Gases
Example: Magnesium
Heavy Metals
Example: Iron
Nonmetals
Example: Carbon
Inert Gases
Example: Helium

8. Light Metals Inert gases Heavy Metals Nonmetals

9. (A substance consisting of a single atom)
An Element
(A substance consisting of a single atom)
The periodic table consists of many elements.

10. Each ELEMENT has it’s own properties such as :
Boiling point
Melting point
Color
Etc…
For further information about an element  Or

11. 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.

12. 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 charge.
Electron cloud – Region of negative charge surrounding an atomic nucleus that is associated with an atomic orbital.

13. Atom electron Proton Neutron

14. Atom
Neutrons
Protons
Electrons
Nucleus
Electron clouds

15. Found on the periodic table
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 O
Found on the periodic table
Oxygen 16

16. Atomic Number = Atomic Weight = Protons = number of protons
number of protons + number of neutrons
Protons =
Number of electrons
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17. Atomic weight (or mass) =
How can we determine the number of neutrons of a particular element from the information given on the periodic table?
Atomic weight (or mass) =
number of protons +
number of neutrons

18. K 19 Atomic Weight = number of protons + number of neutrons 39.0938
neutrons
Potassium
There cannot be of a neutron, so this number is rounded to 20 neutrons.

19. Potassium 20
neutrons
19 protons
19 electrons

20. Practice, Practice, Practice!!
To help you understand the periodic table and the math associated with it, check out this website:
Questions and Answers
Lets play a game to help you learn!
Element Math Game

21. Read Chapter 2 in the Chemistry Text book and do this worksheet.
HOMEWORK !!!
Read Chapter 2 in the Chemistry Text book and do this worksheet.
NO worries…..
Here is some help……………

22. Identifying Key Concepts
EXAMINE the text structure for any elements that the writer may have used to indicate major division in the subject matter.
Bold headings
Subtitles
Graphs
Visuals
Summaries
DETERMINE which sentence in a paragraph is the topic sentence
Often the first sentence

23. LEARN to identify statements that “forecast” key concepts and RECOGNIZE that transitions may sometimes help to identify a key concept.
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 concepts.

24. Audience: grade general science chemistry students Objectives: 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 90% accuracy. 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. Assessment 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.