National 5 Chemistry Ionic Compounds

Front

How are ions formed?

Back

Ions are formed when atoms lose or gain electrons to obtain the stable electron arrangement of a noble gas.

Front

What happens to metal atoms in ionic compounds?

Back

Metal atoms lose electrons forming positive ions.

Front

What happens to non-metal atoms in ionic compounds?

Back

Non-metal atoms gain electrons forming negative ions.

Front

What do ion-electron equations show?

Back

Ion-electron equations show the formation of ions through loss or gain of electrons.

Front

What is an ionic bond?

Back

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

Front

What structure do ionic compounds form?

Back

Ionic compounds form lattice structures of oppositely charged ions.

Front

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 to break up the lattice.

Front

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.

Front

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.

Front

How is conduction in ionic compounds explained?

Back

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