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What are Colloids? Video Lecture | Chemistry Class 12 - NEET

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Video Timeline
Video Timeline
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00:06 Colloids
01:00 A look at particle size
01:40 Types of Colloids
01:53 Tyndall Effect
02:32 Colloids & Biomolecules
03:26 Colloid Applications
04:07 Comparison of Properties
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FAQs on What are Colloids? Video Lecture - Chemistry Class 12 - NEET

1. What are colloids?
Ans. Colloids are a type of mixture where small particles of one substance are dispersed evenly throughout another substance. The particles in a colloid are larger than those in a solution but smaller than those in a suspension. Examples of colloids include milk, mayonnaise, and fog.
2. How are colloids different from solutions and suspensions?
Ans. Colloids differ from solutions and suspensions based on the size of the particles dispersed in the mixture. In a solution, the particles are extremely small and evenly distributed, while in a suspension, the particles are large and settle over time. Colloids have particles that are larger than those in a solution but smaller than those in a suspension, and they do not settle over time.
3. What are the different types of colloids?
Ans. There are different types of colloids based on the states of the dispersed phase and the dispersion medium. Some common types include sols (solid dispersed in a liquid), gels (liquid dispersed in a solid), emulsions (liquid dispersed in a liquid), and aerosols (liquid or solid dispersed in a gas).
4. How are colloids formed?
Ans. Colloids are formed through a process called dispersion, where the particles of the dispersed phase are separated and dispersed throughout the dispersion medium. This can occur through various methods such as mechanical agitation, condensation, or chemical reactions.
5. What are the applications of colloids in everyday life?
Ans. Colloids have various applications in everyday life. They are used in food and beverage industries for the production of products like ice cream, cheese, and salad dressings. Colloids are also used in pharmaceuticals to improve drug delivery systems. Additionally, they have applications in cosmetics, paints, and even in the formation of clouds and fog in the atmosphere.
135 videos|348 docs|182 tests
Video Timeline
Video Timeline
arrow
00:06 Colloids
01:00 A look at particle size
01:40 Types of Colloids
01:53 Tyndall Effect
02:32 Colloids & Biomolecules
03:26 Colloid Applications
04:07 Comparison of Properties
More
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