Chemical Bonds (Grade 11 NSC Matric Physical Sciences): Flashcards

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Chemical Bonds
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Chemical bonds

Forces holding atoms together in compounds

Why atoms bond

To achieve stable electron arrangement like noble gases

Valence electrons

Electrons in outermost energy level, involved in bonding

Bond length

Point where forces balanced, energy at minimum

Covalent bond

Bond formed when pairs of electrons shared between atoms

Lewis diagrams

Use dots to represent valence electrons around symbols

Lone pair

Unshared electron pair belonging to a specific atom

Dative covalent bond

Both electrons in shared pair come from same atom

Bond strength order

Single weakest, double stronger, triple strongest

Why helium doesn't bond

Already has filled outer shell, stable as single atoms

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