Pro š~10 min
Mixtures & Solutions
Separate mixtures and dissolve solutes to explore solubility
How it works
A mixture is made of two or more substances combined together, but each substance keeps its own properties. A solution is a special mixture where one substance (the solute) dissolves completely in another (the solvent) so you cannot see the separate parts. Salt water is a solution ā the salt disappears into the water. Sand in water is a mixture ā you can still see the grains. Temperature affects solubility: warmer water usually dissolves more solute because the water molecules move faster and break apart the solute more quickly.
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Step-by-step
- Pick a substance and set the water temperature, then press Mix!
- Watch whether the substance dissolves to form a clear solution or stays visible as a mixture.
- Try filtering or evaporating to recover the substance.
- Compare results at different temperatures to discover the solubility pattern.
Key formulas
- Most solid substances dissolve more easily in warmer water
Frequently asked questions
- Which substance does NOT dissolve in water?
- Sand stays at the bottom ā it is insoluble. You can separate it by filtering.
- Does sugar dissolve faster in hot or cold water?
- Hot water! Higher temperature makes water molecules move faster, breaking sugar apart more quickly.