Solutions

key notes :

1. What is a Solution?
   • A solution is a mixture where one substance (called the solute) is dissolved in another substance (called the solvent).
2. Examples of Solutions:
   • Sugar dissolved in water (sugar is the solute, and water is the solvent).
   • Salt dissolved in water (salt is the solute, and water is the solvent).
3. Solubility:
   • Solubility is the ability of a substance to dissolve in a solvent.
   • Some substances dissolve easily (like sugar), while others do not (like sand).
4. Making a Solution:
   • To make a solution, add the solute (the substance you want to dissolve) to the solvent (the substance you’re dissolving it in) and stir until it’s mixed evenly.
5. Concentration:
   • Concentration refers to how much solute is dissolved in a given amount of solvent.
   • A solution can be concentrated (a lot of solute) or dilute (a little solute).
6. Saturation:
   • When no more solute can dissolve in a solvent, the solution is said to be saturated.
7. Separating Solutions:
   • Solutions can often be separated by processes like evaporation (to separate a solute from a solvent) or filtration (to remove solid particles).
8. Everyday Examples:
   • Many things in our daily life involve solutions, like making lemonade (sugar dissolves in lemon juice) or adding milk to tea (milk dissolves in hot water).
9. Importance of Solutions:
   • Solutions are important in science, cooking, and many industries because they allow us to mix different substances and create new materials.
10. Safety:
    • Always be cautious when handling chemicals and making solutions, and follow safety guidelines.

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