C3 Giant Covalent Structures

Why does graphite conduct electricity?

• Because it is a metal

• Because it has delocalised electrons

• Because the layers can move over each other

What is the arrangement of atoms in diamond called?

• Tetrahedral

• ionic lattice

• diatomic

• Pentahedral

What kind of bonds are there between atoms in diamond?

• Ionic

• Covalent

• Van der Waals

What bonding holds the layers together in graphite?

• Ionic

• Covalent

• Van Der Waals

Complete the sentence:

Diamond and Graphite are both __________ of carbon

• mixtures

• ionic bonds

• allotropes

Why is graphite soft and slippery?

• because it has delocalised electrons

• Because it is a metal

• Because it has covalent bonds

• Because the layers can move over each other

What do we call large structures that contain only covalent bonds?

• Giant covalent molecule

• Ionic lattice

• Simple molecular structure

What is a covalent bond?

• electrons lost to form a positive ion

• electrons gained to form a negative ion

• pair of electrons shared between tow atoms

Between what ions are ionic bonds formed?

• metal ions

• non-metal ions

• metal and non-metal ions

Between what atoms are covalent bonds formed?

• metal ions

• non-metal ions

• metal and non-metal ions