1. The ATOM

2. All matter is made of atoms.
Parts of an Atom
All matter is made of atoms.
Each and every atom has three parts, called subatomic particles.
Proton
Neutron
Electron

3. Properties of Subatomic Particles
Parts of an Atom
Properties of Subatomic Particles
Particle
Symbol
Location
Relative Electric Charge
Relative Mass
Actual Mass (g)
Proton
Neutron
Electron

4. Parts of an Atom
There are many different types of atoms.
The type of atom is called an element.
The number of protons determines which element that atom is.

5. Types of Atoms: Elements
Since the number of protons determines which element that atom is, this number of protons has a special name.
Atomic number: The number of protons in an atom.
Since ALL atoms are neutral (If they aren’t neutrally charged, they have a special name), the atomic number of an atom also tells us the number of __________ in the atom.

6. Types of Atoms: Elements
The Periodic Table of Elements lists all the different types of atoms (elements) in order of their atomic number.

7. Types of Atoms: The Periodic Table
A row on the periodic table is called a ________.
A column on the periodic table is called a ________.
Elements in the same group have similar chemical properties.

8. HOMEWORK MEMORIZE THE FIRST TWENTY ELEMENTS OF THE PERIODIC TABLE.
NAME
CHEMICAL SYMBOL
ATOMIC NUMBER
Periodic table song (in order)