MATTER.pptx
MATTER Mixture It is composed of two or more pure substances combined through physical means in varying proportions. Each pure substance in a mixture retains its property. The components of a mixture can be separated by physical means depending on the states of the pure substances in a mixture. It can be classified into two namely homogeneous and heterogeneous mixtures. Homogeneous Mixture It has uniform composition and properties. It has only one phase in which it is hard to determine the components of the mixture visually. Heterogeneous Mixture It has varying composition and properties. It may have two or more phases since the individual substance is visually distinct Solution, Suspension and Colloid Mixtures can also be classified based on particle size namely solution, suspension, and colloid. A solution is a homogeneous mixture while a suspension and a colloid are heterogeneous mixtures. 1. Solution It has two or more substances uniformly dispersed throughout the mixture. It forms a single phase It has the smallest particle size. Particles of a solution are invisible to the naked eye. 2. Suspension The components of a suspension separate over time due to the influence of gravity. It has the largest particle size compared to the other types of mixtures. The particles in a suspension are visible to the naked eye 3. Colloid The particles in a colloid only remain suspended in the medium when viewed using a microscope. It has an intermediate particle size compared to solutions and suspensions. The particles appear to be invisible to the naked eye. Tyndall Effect Colloidal particles exhibit Brownian movement and cause Tyndall effect. Brownian movement is the random movement of particles suspended in gas or liquid. This random motion of particles causes the scattering of light or Tyndall effect. Tyndall effect is usually demonstrated by passing a ray of light through a sample mixture. Tyndall effect could be used to identify the mixture as solution, colloid, or suspension.
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- 2. Lesson Objectives At the end of the lesson, you should be able to: a. discuss mixture and its type; and b. differentiate solutions, suspensions, and colloids.
- 4. Mixture • It is composed of two or more pure substances combined through physical means in varying proportions. • Each pure substance in a mixture retains its property. • The components of a mixture can be separated by physical means depending on the states of the pure substances in a mixture. • It can be classified into two namely homogeneous and heterogeneous mixtures.
- 5. Homogeneous Mixture •It has uniform composition and properties. •It has only one phase in which it is hard to determine the components of the mixture visually.
- 7. Heterogeneous Mixture •It has varying composition and properties. •It may have two or more phases since the individual substance is visually distinct
- 9. Solution, Suspension and Colloid •Mixtures can also be classified based on particle size namely solution, suspension, and colloid. •A solution is a homogeneous mixture while a suspension and a colloid are heterogeneous mixtures.
- 10. 1. Solution •It has two or more substances uniformly dispersed throughout the mixture. It forms a single phase •It has the smallest particle size. Particles of a solution are invisible to the naked eye.
- 11. 2. Suspension •The components of a suspension separate over time due to the influence of gravity. •It has the largest particle size compared to the other types of mixtures. The particles in a suspension are visible to the naked eye
- 12. 3. Colloid •The particles in a colloid only remain suspended in the medium when viewed using a microscope. •It has an intermediate particle size compared to solutions and suspensions. The particles appear to be invisible to the naked eye.
- 13. Tyndall Effect • Colloidal particles exhibit Brownian movement and cause Tyndall effect. • Brownian movement is the random movement of particles suspended in gas or liquid. • This random motion of particles causes the scattering of light or Tyndall effect. Tyndall effect is usually demonstrated by passing a ray of light through a sample mixture. • Tyndall effect could be used to identify the mixture as solution, colloid, or suspension.
- 14. • When light passes through a given mixture, the mixture is a solution. • When light does not pass through a given mixture, the mixture is a suspension. • When light passes through a given mixture and the light scatters, the mixture is a colloid.
- 15. Key Points • A mixture is composed of two or more pure substances combined through physical means in varying proportions. Its components retain its property and can be separated by physical means.Mixture can be classified into two. • A homogeneous mixture has uniform composition and properties and has only one phase. • A heterogeneous mixture has varying composition and properties. It may have two or more phases. • Mixtures can also be classified based on particle size namely solution, suspension, and colloid. A solution is a homogeneous mixture while a suspension and a colloid are heterogeneous mixture.
- 16. • A solution has two or more substances uniformly dispersed throughout the mixture. It has the smallest particle size. • A suspension has the largest particle size. The components of a suspension separate over time due to the influence of gravity. • A colloid has an intermediate particle size. The particles in a colloid remain suspended in the medium. However, it appears to be invisible to the naked eye. • Colloidal particles exhibit Brownian movement and cause Tyndall effect. • Brownian movement is the random movement of particles suspended in gas or liquid. • Tyndall effect is the scattering of light.
- 17. Activity No. 1.2 Figures below show separating techniques for the components of mixtures. Another set of properties that distinguishes substances from mixtures.
- 18. Substances and mixtures are classes of matter. Mixtures are heterogeneous or without uniform composition and appearance are not the same all throughout. The temperature of a mixture is different at different times. During melting, a mixture has portions that seem to be not melting.