End of Unit 2 Quiz

What type of atoms are involved in covalent bonding

• Metal and a non-metal

• Metals

• Non-metal and non-metal

• Any

Compared to pure metals, alloys are:

• Harder

• Less malleable

• Less regular in terms of arrangement of atoms

• All of the above

The bonding in NaCl is

• Ionic

• Metallic

• Covalent

• There is no bonding

Ionic bonding is

• the electrostatic forces of attraction between a positive metal ion and a negative ion of a non-metal after electron transfer

• the sharing of electrons between atoms

• the electrostatic forces of attraction between a negative metal ion and a positive ion of a non-metal after electron transfer

• the electrostatic attraction between a metal ion and delocalised electrons

Which is NOT a property of graphene

• It is nearly transparent because it is one atom thick

• Conducts electricity because each carbon has a spare electron

• It is strong due to lots of strong covalent bonds

• It is a liquid at room temperature

Which of these best describes the structure of diamond?

• Each Carbon atom has 3 covalent bonds

• It is a giant covalent structure

• It is spikey

• It is strong

What type of bonding is represented here?

• Ionic

• Covalent

• Metallic

• Electron

What type of bonding is represented in this image

• Electron

• Ionic

• Covalent

• Metallic

What is the charge on a magnesium (Mg) ion?

• +1

• +2

• -2

• -1

What are fullerenes?

• Full atoms

• Allotropes of carbon with a giant hollow structure

• One layer of carbon atoms

• Anything with covalent bonding