Structure And How It Influences The Proprerties And Uses Of Substances

Question 0

What forces of attraction hold ionic bonding together

Answer 0

Strong electrostatic forces between oppositely charged ions

Question 1

What do ionic compounds have

Answer 1

A giant ionic lattice

Question 2

Properties of ionic compounds

Answer 2

High melting point
High boiling point
When molten can conduct electricity
Melts easily

Question 3

Why, when molten, can ionic compounds conduct electricity

Answer 3

As the ions are free to move and carry a charge

Question 4

Properties of simple molecular structures

Answer 4

Vary strong covalent bonds
Very weak intermolecular forces between molecules
Low boiling and melting point
don’t conduct electricity

Question 5

When simple molecular substances are melted what is broken

Answer 5

The intermolecular forces, the covalent bonds stay intact

Question 6

Properties of giant covalent structures

Answer 6

No charged ions
All atoms are bonded by strong covalent bonds
Very hug melting and boiling point
Don’t conduct electricity (except graphite)

Question 7

Main two examples of giant covalent structures, both made of carbon

Answer 7

Diamond and graphite

Question 8

Structure of diamond

Answer 8

Each atom is bonded to four others

Hardest natural substance

Question 9

Structure of graphite

Answer 9

Each atom bonds to three others
In layers which are free to move over each other
Soft and sloppy
Layers are held together by weak intermolecular forces
Conducts

Question 10

Why does graphite conduct electricity

Answer 10

Each atom had one delocalised electron and they conduct