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8 Cards in this Set
- Front
- Back
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How are ions formed? |
- Metals and non-metals - Metals transfer (lose) electrons - Non-metals gain electrons - Metals form positive ions - Non-metals form negative ions
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How are ionic bonds formed? |
- Electrostatic attraction between oppositely charged ions |
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What is the structure of an ionic crystal? |
- Giant structure - Lattice |
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Why do ionic compounds remain solid at room temperatures, and have high melting points? |
- Giant lattices (structures)
- Strong electrostatic forces
- Melting = breaking up ion lattice / electrostatic attractions
- Requires a large amount of energy |
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Why are ionic compounds conductive in solution, or when molten? |
- Ions carry current - Ions free to move in liquid state |
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Why are ionic compounds brittle solids? |
- Lattice arrangement has alternatingly charged ions - A sharp blow can make "like" charged ions be in contact - Repels and therefore shatters |
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Why are most ionic compounds soluble in water? |
- Water is polar - Water molecules pull the ions away from the lattice |
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What is an example of an ionic crystal structure, and what does this look like? |
NaCl (sodium chloride) |
