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To prepare true solutions, suspensions and colloidal solutions - Lab Experiment, Class 9 Science Video Lecture

FAQs on To prepare true solutions, suspensions and colloidal solutions - Lab Experiment, Class 9 Science Video Lecture

1. What is a true solution?
Ans. A true solution is a homogeneous mixture where the solute particles are uniformly distributed and cannot be easily seen or separated from the solvent. The solute particles are usually small molecules or ions that are evenly dispersed at the molecular level throughout the solvent.
2. What is a suspension?
Ans. A suspension is a heterogeneous mixture where the solute particles are larger and can be seen with the naked eye. The solute particles do not dissolve but are suspended in the solvent. Over time, the solute particles settle down due to gravity and can be separated by filtration or sedimentation.
3. What is a colloidal solution?
Ans. A colloidal solution, also known as a colloid, is a heterogeneous mixture where the solute particles are intermediate in size between true solutions and suspensions. The solute particles are larger than individual molecules but smaller than the particles in a suspension. They remain dispersed throughout the solvent and do not settle down easily.
4. How can true solutions be prepared in a lab experiment?
Ans. True solutions can be prepared in a lab experiment by dissolving a solute in a solvent. The solute is added gradually to the solvent while stirring continuously until it is completely dissolved. The resulting mixture is a true solution where the solute particles are evenly distributed at the molecular level.
5. How can suspensions be prepared in a lab experiment?
Ans. Suspensions can be prepared in a lab experiment by adding a solid solute to a liquid solvent and stirring it vigorously. The solute particles will not dissolve but remain suspended in the solvent. It is important to continue stirring while using the suspension to prevent the particles from settling down.
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