Mixtures and Solutions
⭐ MasteredIn a mixture, substances are combined but can be separated. In a solution, like salt in water, one substance dissolves into another.
You can get salt back from salt water by evaporating the water.
All about Mixtures and Solutions
A mixture is made when two or more substances are combined but do not join chemically. The parts keep their own properties and can usually be separated again. A bowl of trail mix or a sandy beach is a mixture.
A solution is a special kind of mixture where one substance, the solute, dissolves into another, the solvent. Salt dissolving in water is a solution. You cannot see the salt once it has dissolved, but it is still there and can be recovered by evaporating the water.
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Real-life uses of Mixtures and Solutions
- Separating sand from water with a filter in a water treatment plant
- Making sugar syrup for cooking and drinks
- Using salt water to make a drink for dehydration
Frequently asked questions about Mixtures and Solutions
What is the difference between a mixture and a solution?
A solution is a mixture in which the solute dissolves completely into the solvent, so it looks like one clear substance.
How can you separate salt from water?
Heat the solution until the water evaporates, leaving the salt behind as crystals.
Is air a mixture?
Yes. Air is a mixture of gases, mainly nitrogen and oxygen, along with small amounts of other gases.