Chemical Bonding-chemistry

What is ionic bonding?

Transfer of electrons between atoms.

Which elements form ionic bonds?

Metals and non-metals.

What is covalent bonding?

Sharing pairs of electrons.

Which elements form covalent bonds?

Non-metals.

What is metallic bonding?

Positive ions surrounded by delocalised electrons.

Why do metals conduct electricity?

They have delocalised electrons.

What is a giant ionic lattice?

A repeating arrangement of ions.

Why do ionic compounds have high melting points?

Strong electrostatic attractions.

When do ionic compounds conduct electricity?

When molten or dissolved.

Do solid ionic compounds conduct electricity?

No.

What is a molecule?

Two or more atoms covalently bonded.

What are intermolecular forces?

Forces between molecules.

Which intermolecular force is strongest?

Hydrogen bonding.

What causes London dispersion forces?

Temporary dipoles.

What is electronegativity?

Attraction for bonding electrons.

What is a polar bond?

Unequal sharing of electrons.

What is a non-polar bond?

Equal sharing of electrons.

Why do giant covalent structures have high melting points?

Strong covalent bonds.

Give an example of a giant covalent structure.

Diamond.

Which form of carbon conducts electricity?

Graphite.