pipc topic 2: bonding and physical properties
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7 Terms
what is binding energy?
energy required to create or break a bond
what is does high binding energy have?
stronger bond
more thermal energy required to overcome bonds
high melting and boiling temperature
properties of ionic compounds
strong electrostatic forces between oppositely charged ions
strong ionic bonds will have high melting points and a lot of thermal energy to break the bonds
properties of covalent compounds
strengths of covalent bonds increase with the number of electron pairs shared between 2 atoms
however less energy is required to vaporize or melt a solid as only the weaker intermolecular forces need to overcome
what is the effect of polarity
higher polarity stronger dipole dipole forces higher boiling point
what is the effect of molecular weight
higher molecular weight stronger dispersion forces higher boiling point
effect on hydrogen bond
if hydrogen bond present abnormally high melting and boiling point