Properties of Ionic Compounds (AQA A-Level Chemistry): Flashcards
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Practise the cards
10 cards from this deck
Structure of ionic compounds
Structure of ionic compounds
Cations & anions held by strong electrostatic forces in giant ionic lattice
Why ionic compounds are hard
Why ionic compounds are hard
Strong attraction between ions forms rigid structure
Why ionic compounds are brittle
Why ionic compounds are brittle
Like charges forced together cause repulsion, splitting solid
Why high melting/boiling points in ionic compounds
Why high melting/boiling points in ionic compounds
Strong electrostatic forces need large energy to overcome
Effect of smaller ions on melting point
Effect of smaller ions on melting point
Stronger forces as ions pack closer - higher melting point
Effect of higher ion charges on melting point
Effect of higher ion charges on melting point
Stronger bonds formed, higher melting points
Electrical conductivity of solid ionic compounds
Electrical conductivity of solid ionic compounds
Do not conduct - ions fixed in place by ionic bonds
Electrical conductivity of molten/dissolved ionic compounds
Electrical conductivity of molten/dissolved ionic compounds
Conduct electricity - ions free to move and carry charge
Solubility of ionic compounds in polar solvents
Solubility of ionic compounds in polar solvents
Generally soluble - water molecules interact with ions
Why some ionic compounds insoluble in water
Why some ionic compounds insoluble in water
Electrostatic forces too strong for water to break lattice