Filetype Power Point PPTX | Posted on 31 Aug 2022 | 3 years ago
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digital resources
219x Filetype PPTX File size 1.82 MB Source: www.manhassetschools.org
Review of Prior
Knowledge
ENDOTHERMIC:
EXOTHERMIC:
POTENTIAL ENERGY:
Why do atoms become ions?
How do atoms become ions?
How do metals form ions?
How do nonmetals form ions?
Aim # 1- Why do elements form
bonds?
A chemical bond is
- force of attraction between the atoms of a
compound
the electrons of one atom are attracted to the
protons of another
the combining atoms either lose, gain, or share
electrons in order to complete their outer shells
Energy and Chemical
Bonds
Endothermic- energy is absorbed, bonds break
Exothermic- energy is released, bonds form
Remember: “BARF”
Bonding and Stability
When bonds are formed their products are more stable
The bonded elements of a compound become stable
because their valence shell is full
Atoms become ions to become stable
Remember metals lose electrons to become positively
charged
Nonmetals gain electrons and become negatively
charged
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