Step 17 of 18 · Solutions and mixtures · SC4-SOL-01
Separating mixtures
Every technique uses one property: size, boiling point, magnetism or density.
Learn it
Choose a separating technique based on the properties of the substances in a mixture
Idea 1 of 4
Mixtures can be separated
A mixture is two or more substances that aren't chemically joined, so physical methods can pull them apart. The trick is finding a property one substance has and the other doesn't.
Know it by heart
Say each one in your head, then tap to check.
Try it
Play — nothing here is marked
Pick a technique. Each one uses a different property to pull one thing out.
Mixture 1 of 10
Sand and water
Pick the technique.
A full-marks answer
Describe how to get pure, dry salt from a mixture of salt and sand.
3 marksBuilt one line at a time — say the next line before you reveal it
- Add water and stir, so the salt dissolves but the sand doesn't.(use solubility)
Words to know
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Step 17 · last bit
Ready? Prove it.
A round of ten. Score 8 or more and this step is done — then on to water and density.