Year 10 - Science
Water sample analysis: dissolved solids
Separating substances
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explores purification techniques, including filtration, crystallisation, and distillation. It explains formulations, uses chromatographic methods to identify pure and impure substances, and interprets chromatograms with Rf values. The emphasis is on accurate measurements.
Lesson Summary
You will learn to apply techniques to analyse water samples containing dissolved substances.
Key Notes
- Data can be analysed to assess the purity of water samples containing dissolved solids.
- Evaporation set-ups can be used to collect dissolved solids from a water sample.
Vocabulary To Learn
- sample: A smaller portion of a larger quantity of a substance.
- dissolve: When a substance's particles separate and spread throughout the particles of a solvent resulting in it no longer being seen.
- analysis: Process of separating and quantifying the components of a sample to understand its nature and composition.
Common Mistakes To Avoid
- All water is the same.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Data can be analysed to assess the purity of water samples containing dissolved solids. Evaporation set-ups can be used to collect dissolved solids from a water sample.
2. Define this scientific word and use it in context. 'sample'
A smaller portion of a larger quantity of a substance. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: All water is the same. Correction: The dissolved solid content of water samples is affected by the environment from which it was obtained.
More Lessons In This Unit
- Chromatography: paper Study Guide
- Chromatography: separating a mixture of inks Study Guide
- Comparing types of chromatography: including gas chromatography Study Guide
- Crystallisation Study Guide
- Distillation: fractional distillation Study Guide
- Distillation: separating a mixture of inks Study Guide
- Distillation: simple distillation Study Guide
- Filtration Study Guide
- Interpreting chromatograms Study Guide
- Potable water Study Guide
- Potable water: including sedimentation Study Guide
- Separating mixtures Study Guide
- Separating mixtures (including formulations) Study Guide
- Solutions Study Guide
- Wastewater treatment Study Guide
- Water sample analysis: distillation Study Guide
- Water sample analysis: pH Study Guide
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