EQE Bonding

What type of bonding is present in calcium oxide?

• Covalent

• Ionic

• Macromolecular

• Metallic

What type of particle is present in Figure 2?

• Ion

• A lattice

• A molecule

• A polymer

The structure of C₆₀ is ​ (a)  

• a fullerene
• diatomic
• giant ionic
• giant metallic

What type of bond is labelled A in Figure 4?

• covalent

• double

• ionic

• metallic

In graphite, each carbon atom forms bonds with other carbon atoms as shown in Figure 4

How many electrons does one carbon atom use to form one bond?

• 1

• 2

• 3

• 4

Figure 5 shows that copper conducts electricity as a ​ (a)  

• solid
• gas
• liquid
• solution

Copper conducts electricity because of the movement of delocalised ​ (a)  

• electrons
• atoms
• ions
• molecules

Figure 6 shows that sodium chloride conducts electricity when ​ (a)  

• dissolved
• gaseous
• molten

Solid sodium chloride does not conduct electricity because ​ (a)  

Molten sodium chloride conducts electricity because ​ (b)  

• The ions are fixed.
• The ions are mobile.
• The ions are neutral.
• The ions are vibrating.

Complete the dot and cross diagram, selecting all the electrons present