Learning objective

Analyze simple chromatograms to determine: (a) unknown substances by comparing them with known substances (b) whether substances are pure or impure.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE ChemistryExperimental techniques and chemical analysisCore content

Study support

Understand this objective

Quick explanation

This point belongs to Chromatography, especially Chromatography outcomes.
You need to be able to analyze simple chromatograms to determine: (a) unknown substances by comparing them with known substances (b) whether substances are pure or impure.
The key ideas to know are Identify, Discuss, and Determine.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

IdentifyDiscussDetermine

Why it matters

This objective helps connect Chromatography outcomes to exam-style questions, flashcards, and revision notes for Chromatography.

Revision tools

Flashcards10 linked cards

Flashcard 1 of 10

Press Space to flip, arrows to move

Practice Questions7 linked questions

Question 1 of 7

Choose an answer, get feedback, then move sideways through the set.

0 of 5 attempted

Paper 3Theory (Core)1 marks

Description

The chromatogram shows three distinct spots labeled A, B, and C, with Rf values of 0.5, 0.3, and 0.7 respectively.

a
State What can you conclude about the purity of the substance represented by spot A?
Your answer
Aim for approximately 1 distinct marking point.
[1]

Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

Revision hubs