Why do ionic compounds have high melting and boiling points?
A large amount of energy is needed to overcome the strong electrostatic attractions between oppositely charged ions in the lattice.
AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Foundation · 5.2.2.3
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Why do ionic compounds have high melting and boiling points?
A large amount of energy is needed to overcome the strong electrostatic attractions between oppositely charged ions in the lattice.
What must a substance contain to conduct electricity?
Charged particles that can move.
Why does a solid ionic compound conduct electricity poorly?
Its ions are fixed in place and cannot move.
Why does an ionic compound conduct electricity when molten or dissolved in water?
Its ions can move in these states.
What is a giant ionic lattice?
A regular, repeating three-dimensional arrangement of positive and negative ions.
Which ions surround each ion in a giant ionic lattice?
Ions of the opposite charge.
What forces hold a giant ionic lattice together?
Strong electrostatic attractions between oppositely charged ions, acting throughout the lattice in all directions.
Is an ionic crystal made of separate small molecules?
No. The whole crystal is one extended structure.