GCSE CHEMISTRY AQA BONDING EXAM REVISION. QUESTIONS
WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.
What happens to the metal in ionic bonding? - ANSWER- It loses electrons and becomes
positively charged
What happens to the non metal in ionic bonding? - ANSWER- It gains electrons and becomes
negatively charged
Why do ionic compounds have high melting and boiling points? - ANSWER- The ions are
arranged in a regular lattice, and held together by strong forces of attraction within this. This means
a lot of force is required to break them apart.
What happens during metallic bonding? - ANSWER- Positive metal ions are surrounded by
delocalised electrons that move in between the regular layers
Why can metals conduct electricity? - ANSWER- The delocalised electrons can move and carry
charge. This happens in all states
What are alloys? - ANSWER- substances made from two or more different metals mixed
together
Why do alloys have different properties to metals? - ANSWER- They don't have regular layers
so are stronger and have higher melting points
What happens in covalent bonding? - ANSWER- A shared pair of electrons between non metals
from the outer shell
What are the properties of simple covalent molecules? - ANSWER- Micromolecular lattice
Weak forces of attraction so have low boiling points
WITH VERIFIED SOLUTIONS LATEST 2025 UPDATE.
What happens to the metal in ionic bonding? - ANSWER- It loses electrons and becomes
positively charged
What happens to the non metal in ionic bonding? - ANSWER- It gains electrons and becomes
negatively charged
Why do ionic compounds have high melting and boiling points? - ANSWER- The ions are
arranged in a regular lattice, and held together by strong forces of attraction within this. This means
a lot of force is required to break them apart.
What happens during metallic bonding? - ANSWER- Positive metal ions are surrounded by
delocalised electrons that move in between the regular layers
Why can metals conduct electricity? - ANSWER- The delocalised electrons can move and carry
charge. This happens in all states
What are alloys? - ANSWER- substances made from two or more different metals mixed
together
Why do alloys have different properties to metals? - ANSWER- They don't have regular layers
so are stronger and have higher melting points
What happens in covalent bonding? - ANSWER- A shared pair of electrons between non metals
from the outer shell
What are the properties of simple covalent molecules? - ANSWER- Micromolecular lattice
Weak forces of attraction so have low boiling points
