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Questions and Answers
What is the main characteristic of a homogenous mixture?
What is the main characteristic of a homogenous mixture?
Which process involves the random movement of liquid colloid particles?
Which process involves the random movement of liquid colloid particles?
What technique involves the use of a porous barrier to separate a solid from a liquid?
What technique involves the use of a porous barrier to separate a solid from a liquid?
What is a heterogeneous mixture characterized by?
What is a heterogeneous mixture characterized by?
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Which process is based on the differences in the boiling points of the substances involved?
Which process is based on the differences in the boiling points of the substances involved?
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What does the Tyndall effect refer to?
What does the Tyndall effect refer to?
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Study Notes
Mixtures
- A mixture is a combination of two or more pure substances, where each pure substance retains its individual chemical properties.
- Mixtures can be classified into heterogeneous and homogeneous mixtures.
Types of Mixtures
- Heterogeneous mixture: a mixture that does not blend smoothly throughout and in which the individual substances remain distinct.
- Homogeneous mixture: a mixture that has constant composition throughout and has a single phase.
Suspensions and Colloids
- Suspension: a mixture containing particles that settle out if left undisturbed.
- Colloid: a heterogeneous mixture with particles between 1nm to 1000nm in diameter that do not settle out.
- Brownian motion: the random movement of liquid colloid particles.
- Tyndall effect: the scattering of light due to the dispersed colloid particles.
Solutions
- Solution: a homogeneous mixture from two or more substances.
Separation of Mixtures
- Separation processes are based on the differences in the physical properties of the substances.
- Filtration: a technique that uses a porous barrier to separate a solid from a liquid.
- Distillation: a physical separation technique based on the differences in the boiling points of the substances involved.
- Crystallization: a separation technique that results in the formation of pure solid particles of a substance from a solution containing the dissolved substance.
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Description
Learn about mixtures, including homogeneous and heterogeneous mixtures, as well as the process of separation of mixtures. Understand the definitions and characteristics of mixtures and different methods of separating them.
