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Solubility
Year 8 solubility and mixtures
Question | Answer |
---|---|
Solute | Substance that dissolves in a solvent |
Solvent | A liquid that can dissolve a substance |
Solution | A mixture of a liquid and a substance that can dissolve |
Mixture | Contains different substances that are not chemically joined together |
Give an example of a solution | Salt water/Sugar and tea |
What happens when we add salt to water? | Salt dissolves but the mass of the solution increases. |
Soluble | when a substance CAN dissolve |
Give an example of a soluble substance | Salt/Sugar/Copper Sulphate |
Insoluble | When a substance CAN'T dissolve |
Give an example of an insoluble substance | Wood/Glass/Metal/oil |
Saturated | When there are no gaps left between particles of a solvent, and no more solute will dissolve |
Solubility | How much solute will dissolve. |
Does a hot drink have more solubility than a cold drink? | Yes |
How does increasing the temperature of a solvent increase the solubility? | Particles will have more energy, meaning there will be more gaps between particles for a solute to dissolve into. |
Dissolve | When a substance is broken up and incorporated into a solvent to form a solution. e.g. when a sugar cube is broken down and absorbed into a cup of tea |
How can pressure affect solubility? | Increasing pressure increases solubility of gas particles as they are forced into a solvent. |