Module 3 - Lesson 2 - Mixtures

Module 3 - Lesson 2 - Mixtures

by Manilyn Borcena

Multiple Choice

What separating technique is shown in the picture?

• Evaporation

• Chromatography

• Distillation

• Filtration

Multiple Choice

What separating technique is shown in the picture?

• Evaporation

• Chromatography

• Distillation

• Filtration

Multiple Choice

What separating technique is shown in the picture?

• Evaporation

• Chromatography

• Distillation

• Filtration

Multiple Choice

What separating technique is shown in the picture?

• Evaporation

• Chromatography

• Distillation

• Filtration

Multiple Choice

What separating technique is shown in the picture?

• Magnetic Separation

• Winnowing

• Handpicking

• Sieving

Multiple Choice

What separating technique is shown in the picture?

• Magnetic Separation

• Winnowing

• Handpicking

• Sieving

Multiple Choice

What separating technique is shown in the picture?

• Magnetic Separation

• Winnowing

• Handpicking

• Sieving

Multiple Choice

What separating technique is shown in the picture?

• Magnetic Separation

• Winnowing

• Handpicking

• Sieving

​1. What is a mixture?

2. What are the sets of properties of mixtures?

​What is MIXTURE?

​A mixture is made when two or more substances are combined, but they are not combined chemically.

​

​​

Read more at: https://www.ducksters.com/science/chemistry/chemical_mixtures.phpThis text is Copyright © Ducksters. Do not use without permission.

Open Ended

Describe MIXTURES in terms of appearance.

Open Ended

Describe MIXTURES in terms of melting point.

Open Ended

Describe MIXTURES in terms of boiling point.

​MIXTURES

• Mixtures are heterogeneous or without uniform composition and appearance are not the same all throughout. (But it can also be a homogeneous)

• The temperature of a mixture is different at different times.

• During melting, a mixture has portions that seem to be not melting.​

​Take Note!

• Mixtures can be homogeneous or heterogeneous.

• Composed of different components, can be visible or not.

• Can be a solution, colloids or suspension.

• ​https://www.youtube.com/watch?v=XEAiLm2zuvc

• No fixed temperature for boiling and melting

• Can be separated by different techniques.

​What is a solution?

​A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.

​

• solvent: the substance in which a solute dissolves to produce a homogeneous mixture

• solute: the substance that dissolves in a solvent to produce a homogeneous mixture

​What is a colloid?

​A colloid mixture has particles that are not as small as a solution and not as large as a suspension. The particles are intermediate in size. What makes the colloid mixture unique is that the particles are assorted throughout pretty evenly and they stay that way.

​What is a suspension?

​Suspensions are also made up of particles and a solvent; however, its particles are larger than those found in a solution. The particles in a suspension can be distributed throughout the suspension evenly by shaking the mixture. However, the particles in a suspension do not remain distributed throughout the suspension - they will settle out.

​Tyndall Effect

​The Tyndall Effect is the effect of light scattering in colloidal dispersion, while showing no light in a true solution. This effect is used to determine whether a mixture is a true solution or a colloid.

Open Ended

Give an example of a solution.

Open Ended

Give an example of a colloid.

Open Ended

Give an example of a suspension.

​Take Note!

• Mixtures can be homogeneous or heterogeneous.

• Composed of different components, can be visible or not.

• Can be a solution, colloids or suspension.

• ​https://www.youtube.com/watch?v=XEAiLm2zuvc

• No fixed temperature for boiling and melting

• Can be separated by different techniques.

Multiple Select

Which pictures show filtration or straining?

Multiple Choice

Which picture shows pieces of iron being separated?

Multiple Choice

Which picture shows dissolving?

Multiple Choice

Which picture shows evaporation?

Multiple Choice

Which picture shows decantation?

Multiple Choice

Joseph wants to compare the chemical properties of two substances. In

doing it, he prepared two flasks containing the substances and labeled them

Liquid A and Liquid B. He monitored the boiling points of the liquids and found

that the boiling points were 100˚C for substance A and 110˚C - 112˚C for liquid

B. How would you classify the two liquids? Which liquid is mixture?

• Liquid A

• Liquid B

Multiple Choice

Teacher Joy placed two white solid substances in two different beakers.

She labeled the beakers as Solid A and Solid B. She said that Solid A is a

substance and Solid B is a mixture. If you are going to test the melting point of

the two samples what would you expect to the melting point of Solid A and Solid

B?

• Solid A melts completely and Solid B has portions seem not to be melting.

• Solid A has portions seem not to be melting and Solid B melts completely 

• Both solids melt completely

​What to Accomplish for today:

• ​What I have Learned

• ​What I can do

• ​Additional Activities