WHAT ISMATTER?
PURE SUBSTANCES
ELEMENTS
COMPOUNDS
+ info
+ info
ELEMENTS VS. COMPOUNDS
Ammonia
Calcium
Neon
Salt
Copper
Citric Acid
Baking soda
Aluminum
PERIODIC TABLE OF ELEMENTS
DMITRI IVANOVICHMENDELEEV
- Russian chemist who developed the periodic table of elements and formulated the periodic law.
PARTICLES THAT MAKE UP AN ATOM
PROTON Positively charged particle
ELECTRON Negatively charged particle
NEUTRON Does not have an electric charge
ATOMIC NUMBER AND MASS NUMBER
LESSON ONE
THE
OCTET RULE
VALENCE ELECTRONS
- are the electrons in the outermost shell of an atom.
THE OCTET RULE
Octa - is a Greek prefix meaning eight. The Octet Rule can thus be called as the RULE OF EIGHT.
States that when atoms lose, gain or share electrons during a chemical bond, the outermost shell should be filled with 8 electrons similar to those of noble gases.
This is the rule followed by atoms involved during compound formation.
+ info
STABILITY
- refers to the strength to stand or a resistance to chemical change or to physical disintegration.
GILBERT NEWTONLEWIS
- American chemist who proposed the Octet Rule.
- Spent one year in the Philippines as the Superintendent of the Bureau of Weights and Measures.
LEWIS ELECTRON
DOT SYMBOL(lEDS)
PERIODIC TABLE OF ELEMENTS
How will you draw the LEDS?
Write the chemical symbol of the atom.
Determine the group where an atom belongs in the periodic table.
Draw the dots the correspond to the number of the atom's valence electrons.
Examples:
2. Flourine
1. Carbon
Draw the LEDS of the following atoms.
2. Bromine
1. Si
3. Iodine
4. S
5. Kr
7. Be
6. Calcium
8. Barium
9. Silver
10. P
THANKS!
OCTET RULE
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Transcript
WHAT ISMATTER?
PURE SUBSTANCES
ELEMENTS
COMPOUNDS
+ info
+ info
ELEMENTS VS. COMPOUNDS
Ammonia
Calcium
Neon
Salt
Copper
Citric Acid
Baking soda
Aluminum
PERIODIC TABLE OF ELEMENTS
DMITRI IVANOVICHMENDELEEV
PARTICLES THAT MAKE UP AN ATOM
PROTON Positively charged particle
ELECTRON Negatively charged particle
NEUTRON Does not have an electric charge
ATOMIC NUMBER AND MASS NUMBER
LESSON ONE
THE
OCTET RULE
VALENCE ELECTRONS
- are the electrons in the outermost shell of an atom.
THE OCTET RULE
Octa - is a Greek prefix meaning eight. The Octet Rule can thus be called as the RULE OF EIGHT.
States that when atoms lose, gain or share electrons during a chemical bond, the outermost shell should be filled with 8 electrons similar to those of noble gases.
This is the rule followed by atoms involved during compound formation.
+ info
STABILITY
- refers to the strength to stand or a resistance to chemical change or to physical disintegration.
GILBERT NEWTONLEWIS
LEWIS ELECTRON
DOT SYMBOL(lEDS)
PERIODIC TABLE OF ELEMENTS
How will you draw the LEDS?
Write the chemical symbol of the atom.
Determine the group where an atom belongs in the periodic table.
Draw the dots the correspond to the number of the atom's valence electrons.
Examples:
2. Flourine
1. Carbon
Draw the LEDS of the following atoms.
2. Bromine
1. Si
3. Iodine
4. S
5. Kr
7. Be
6. Calcium
8. Barium
9. Silver
10. P
THANKS!