Talk:High School Chemistry/Intra & Intermolecular Forces

Metallic Bonds

• Valence electrons are mobile.
• Electrons involved? Metals
• Particles present? Cations and electrons
• Type of attraction? Attraction between metallic particles
• Melting and boiling point? High, except for Mercury
• Water solubility? Low
• Conductivity as a solid? High (good)
• Conductivity when melted or aqueous? High (good)
• Malleable? Yes
• Hard, brittle, or soft? Hard

Ionic Bonds

• Valence electrons are transferred.
• Electrons involved? Nonmetal + Metal
• Particles present? Cations + anions
• Type of attraction? Electrostatic -- strong attraction
• Melting and boiling point? High
• Water solubility? High
• Conductivity as a solid? Poor
• Conductivity when melted or aqueous? Good
• Malleable? (able to be pressed into several shapes) No
• Hard, brittle, or soft? Brittle

Covalent Bonds

• Valence electrons are shared.
• Electrons involved? Nonmetal and nonmetal
• Particles present? Atoms
• Type of attraction? Nuclear attractions

• Melting and boiling point? M: Low; N: High
• Water solubility? M: ; N: Low
• Conductivity as a solid? M: No; N: Varies
• Conductivity when melted or aqueous? M: No; N: Varies
• Malleable? M: No; N: No
• Hard, brittle, or soft? M: Varies; N: Varies

Ionic (I), Covalent (C), or Metallic (M)?

1. Si C
2. Ibuprofen (C₁₃H₁₈O₂) C
3. Chalk (CaCO₃) I
4. Fe M
5. Ozone (O₃) C
6. Milk of magnesia (Mg(OH)₂) I
7. Brass M
8. HCN C
9. KNO₃ I
10. NaF I