Chemical Bonding Chapters 8,9 Concepts of Chemical Bonding and Bonding Theories.
Chemical bonding
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Transcript of Chemical bonding
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Mrs. Leah Mae C. Mojar
Science Teacher
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CHEMICAL BONDINGGroup 5
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GILBERT NEWTON LEWIS
Who proposed the chemical bonds?
- an American chemist who
proposed that the chemical bonds
are formed between atoms
because electrons from the atoms interacts with each other.
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GILBERT NEWTON LEWIS- observed that many elements are most
stable when they contained eight electrons in
their valence shell like that of the noble
gases- condition is attained by atoms either by
transferring or sharing electrons- two processes of forming the two main
types of chemical bonding: ionic and
covalent bonding
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IONIC BONDINGIt involves the combination of ions of opposite
charges
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- are positively-charged atoms which are formed
when an atom loses electrons. The charge depends
on the number of electrons the atom lost
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- are negatively-charged atom which are formed when
an atom gains electrons. The charge depends on the
numbers of electron the atom gained.
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NaCl
a positively-charged Sodium ion (left) and a
negatively-charged Chlorine ion (right)
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Sodium
Metal +Chlorine
gasTable salt
Sodium Metal – is a very reactive metal. It reacts violently and it produces flame once it gets wet.
Chlorine – is a poisonous gas used as
a weapon in World War I.
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The compounds formed are called ionic compounds.
After the reaction takes place, the
charged Na+ and Cl- ions are held
together by electrostatic forces, thus
forming an ionic bond.
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FEATURES OF IONIC COMPOUNDS
• In naming simple ionic compounds, the
metal is always given first, the non-metal
(i.e., Sodium chloride)• Ionic compounds dissolve easily in water
and other polar solvents.
• In solutions, ionic compounds easily
conduct electricity.• Ionic compounds tend to form crystalline
solids with high melting temperature.
• Ionic compounds form between metals
and non-metals.
* END OF
REPORT *
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Prepared by: Loraine Capillanes
Ryan Jay SuperalesElaine Grace Delos
ReyesJasteen DeluaoBai Ali Ferdauz
MaloHerchell PonsicaRey RemondeHAGONOY NATIONAL HIGH SCHOOL
Guihing, Hagonoy, Davao del Sur