Think about what makes the parts different. Magnetic attraction helps separate iron, while hole size helps separate larger and smaller grains. Ordinary filtration can trap suspended sand, but dissolved sugar is not a pile of grains waiting on the paper. Clear-looking filtered water is not automatically safe to drink or free of dissolved substances.
Matter and chemistry · Discover & try
How can a mixture be separated without a reaction?
Reading level 2 of 5 · DevelopingChange
Word help
mixture
Materials together without a single fixed chemical composition.
filtration
Separating some components using a barrier that permits others to pass.
Watch · Try · Explain
See how it works
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Virtual magnetic and size-based sorting; ordinary filter behaviour is simplified and does not certify safe water.
What to look for
- A tool needs a property difference
- Dissolved material is not suspended sand
- Components are sorted rather than created
Explain what you noticed
Sugar has fully dissolved in water. Will an ordinary paper filter collect the sugar like grains of sand?
Keep this idea: Match a separation mechanism to a useful property difference.
Follow the sources
- University of California San Diego — Separating Mixtures: Teacher Version
- U.S. Environmental Protection Agency — Filtration
Source material checked 2026-10-29. Explanations and activities by Nepedia. Source links do not imply endorsement.
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