Edexcel IGCSE Chemistry · Spec 2.47-2.50
Tests for Ions and Water
Covers identify common cations using sodium hydroxide, Use the correct acid before sulfate and halide tests and Test for carbonate ions and water.
Chemistry revision video
Tests for Ions and Water
Prefer to watch on YouTube? Open this video on YouTube.
Spec 2.47-2.50
What you need to know
- Identify common cations using sodium hydroxide
- Use the correct acid before sulfate and halide tests
- Test for carbonate ions and water
Active recall
Quick check
Answer each question before opening the answer.
Which acid is used before the sulfate test?
Dilute hydrochloric acid
What colour is silver bromide?
Cream
How does anhydrous copper sulfate test for water?
It changes from white to blue
Chemistry video companion
Keep your notes and exam practice together
The free Chemistry workbook follows every video in specification order.