Stogs GCSE Interleaving Structure L

How do ionic bonds form?

• Electron pairs are shared between atoms.

• Metal atoms lose electrons, which are gained by non-metal atoms.

• Protons are exchanged.

• Metal atoms lose their outer shell electrons.

What is an ionic bond?

• A shared pair of electrons.

• A strong intermolecular force of attraction between oppositely charged ions.

• A strong electrostatic force of attraction between oppositely charged ions.

• A strong electrostatic force of attraction between positively charged metal ions and negatively charged delocalised electrons.

Define the term ‘ion’.

• A cation

• An atom or group of atoms which has lost or gained electrons.

• An anion

• A charged molecule.

An ionic lattice structure:

• Is a giant structure

• Consists of a regular arrangement of ions.

• Has delocalised electrons which can move.

• Is held together by strong electrostatic forces of attraction.

A covalent bond is:

• A shared electron.

• A shared pair of electrons.

• The strong electrostatic force of attraction between oppositely charged ions.

• The strong electrostatic forces of attraction between positive metal ions and delocalised electrons.

A substance has low melting and boiling points. What kind of bonding is it likely to contain?

• Giant ionic

• Giant covalent

• Giant metallic

• Simple covalent

A substance has medium melting and boiling points and conducts electricity both as a solid and liquid. What is it’s bonding likely to be?

• Giant covalent

• Giant ionic

• Giant metallic

• Simple covalent

A substance has high melting and boiling points and only conducts electricity when molten or dissolved in solution. What kind of bonding is likely to be present in the substance?

• Giant covalent

• Giant ionic

• Giant metallic

• Simple covalent

A substance has high melting and boiling points, is very strong and doesn’t conduct electricity in any state. What kind of bonding is it likely to consist of?

• Giant ionic

• Giant covalent

• Giant metallic

• Simple covalent

Simple covalent structures have low melting and boiling points because:

• Weak covalent bonds are broken

• Strong covalent bonds are broken

• Weak intermolecular forces of attraction are broken

• Strong intermolecular forces of attraction are broken