Edexcel IGCSE Chemistry · Spec 3.17-3.18
Reversible Reactions
Reversible reactions and how they can reach a balance.
Chemistry revision video
Reversible Reactions
Prefer to watch on YouTube? Open this video on YouTube.
Spec 3.17-3.18
What you need to know
- Explain what a reversible reaction is
- Recognise the reversible arrow
- Describe an example of a reversible change
Active recall
Quick check
Answer each question before opening the answer.
What does the ⇌ symbol mean in an equation?
That the reaction is reversible — it can go in both directions.
What happens when blue hydrated copper sulfate is heated, and how is it reversed?
It turns white (anhydrous) as water is driven off; adding water turns it blue again.
Chemistry video companion
Keep your notes and exam practice together
The free Chemistry workbook follows every video in specification order.