Nat 5 - Ionic Compounds and Ions

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What are ions and how are they formed?

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Ions are formed when atoms lose or gain electrons to obtain the stable electron arrangement of a noble gas. Metal atoms lose electrons forming positive ions, and non-metal atoms gain electrons forming negative ions.

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What is an ionic bond?

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An ionic bond is the electrostatic attraction between positive and negative ions.

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Describe the structure of ionic compounds.

Back

Ionic compounds form lattice structures of oppositely charged ions, with each positive ion surrounded by negative ions and each negative ion surrounded by positive ions.

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Why do ionic compounds have high melting and boiling points?

Back

Ionic compounds have high melting and boiling points because strong ionic bonds must be broken in order to break up the lattice.

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Are ionic compounds soluble in water?

Back

Many ionic compounds are soluble in water. As they dissolve, the lattice structure breaks up allowing water molecules to surround the separated ions.

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When do ionic compounds conduct electricity?

Back

Ionic compounds conduct electricity only when molten or in solution as the lattice structure breaks up allowing the ions to be free to move.

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How is conduction in ionic compounds explained?

Back

Conduction in ionic compounds can be explained by the movement of ions towards oppositely charged electrodes.

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what is the structure of this?

Back

Ionic LATTICE

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