1. Introduction to Chemistry
Grade 9 Chemistry Review

2. Matter Everything is made up of matter
All matter is made up of elements
Elements are made up atoms
Atoms are made up of protons, neutrons, and electrons
Matter can be classified by Physical and Chemical characteristics

3. The Physical Classification of Matter
There are three states of matter
Solid
Liquid
Gas

4. The Chemical Classification of Matter

5. The Classification of Matter: Activity

6. The Periodic Table of Elements
Elements are organized into a groups and families in the periodic table of elements.
Elements are organized according to their atomic number (the number of protons in their nucleus).
Families of elements share chemical and sometimes physical characteristics.

7. Periodic Table of Elements: Groups
Retrieved January 2010 from

8. Periodic Table of Elements: Families
Retrieved January 2010 from

9. The Periodic Table of Elements Song

10. Atomic Structure
Each element on the periodic table is made up of atoms. Each atom of each element has a unique make up of protons, and also of neutrons and electrons.
Atomic Number: The number of protons in the nucleus of an atom.
Atomic Weight: The total number of subatomic particles in the nucleus of an atom.
# of Protons + # Neutrons

13. Atomic Structure
Atomic Structure Video #1
Atomic Structure Video #2

14. Atomic Math For any element…
Atomic Number = # of Protons = # of Electrons
Atomic Weight – Atomic Number = # of Neutrons

15. Atomic Math Example Krypton Atomic Number = 36 (= # of Protons)
# of Protons = # of Electrons = 36
Number of Neutrons = 48
Atomic Weight - Atomic Number = = 48

16. Atomic Math Practice Activity

17. Chemical Symbols…Why? English French Latin German Symbol
Silver Argent Argentum Silber Ag
Gold Or Aurum Gold Au
Iron Fer Ferrum Eisen Fe
Copper Cuivre Cuprum Kupfer Cu
The element symbol is international, regardless of language. It is often based on the Latin name of the element.
The first letter of the symbol is always a capital letter.
The symbol is always made up of 2 or 3 letters.