Chemistry Skills Check 1 1 SKILLS CHECK ON

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Chemistry- Skills Check 1 1

Chemistry- Skills Check 1 1

SKILLS CHECK ON THE FOLLOWING MIXTURES Homogeneous Heterogeneous Solutions Suspensions Colloids Emulsions

SKILLS CHECK ON THE FOLLOWING MIXTURES Homogeneous Heterogeneous Solutions Suspensions Colloids Emulsions

Homogeneous Mixture ? #1 Which of the following is a homogeneous solution? A. B.

Homogeneous Mixture ? #1 Which of the following is a homogeneous solution? A. B. C. D. 3

Heterogeneous Mixture ? #2 Which of the following is a heterogeneous mixture? A. B.

Heterogeneous Mixture ? #2 Which of the following is a heterogeneous mixture? A. B. C. D. 4

Solutions? #3 A measure of how much solute may be dissolved into a solvent

Solutions? #3 A measure of how much solute may be dissolved into a solvent is called ____ ? A. dilute C. solubility B. concentrate D. mixture 5

The image depicts a solution which can hold no more solute. Solute accumulates on

The image depicts a solution which can hold no more solute. Solute accumulates on the bottom. The solution is said to be _______ A. saturated B. temperate C. soluble D. unsaturated #4 6

Suspensions? #5 Suspensions differ from solutions in several ways. List all that apply. a.

Suspensions? #5 Suspensions differ from solutions in several ways. List all that apply. a. Clear or b. cloudy c. Particles settle or d. don’t settle e. Particles visible or f. not visible g. Water vapor or h. dust – example i. Is a mixture or j. is not a mixture 7

Solutions? #6 All of the following are ways to increase solubility of a solute

Solutions? #6 All of the following are ways to increase solubility of a solute except. a. Increase heat & increase solvent b. filtration & evaporation c. crush or grind to increase surface area d. stirring & increase heat 8

Suspensions? #7 All of the following are ways to separate suspensions discussed in your

Suspensions? #7 All of the following are ways to separate suspensions discussed in your text and demonstrated in class, except? Settling, Boiling, Filtration, Coagulation Separation by Centrifuge, Evaporation 9

Emulsions When a liquid is suspended in another liquid the resulting mixture is called

Emulsions When a liquid is suspended in another liquid the resulting mixture is called an emulsion. An emulsion is really just a specific type of colloid. Both are types of suspensions 10

Colloids These are suspensions in which the particles are permanently suspended. Colloids do not

Colloids These are suspensions in which the particles are permanently suspended. Colloids do not separate when left standing. Some permanent emulsions are colloids. The particles in a colloid are larger than those of solution, however smaller than those of suspensions. Another way to think of a colloid is a suspension that cannot be separated by filtration. 11

Example A. Solution B. Solute #8 C. Suspension D. Solvent Homogeneous or Heterogeneous 12

Example A. Solution B. Solute #8 C. Suspension D. Solvent Homogeneous or Heterogeneous 12

Example A. Solution B. Colloid #9 C. Suspension D. Emulsion Homogeneous or Heterogeneous 13

Example A. Solution B. Colloid #9 C. Suspension D. Emulsion Homogeneous or Heterogeneous 13

Example A. Solution B. Colloid #10 C. Suspension D. Emulsion Homogeneous or Heterogeneous 14

Example A. Solution B. Colloid #10 C. Suspension D. Emulsion Homogeneous or Heterogeneous 14

Example A. Solution B. Colloid #11 C. Suspension D. Emulsion Homogeneous or Heterogeneous 15

Example A. Solution B. Colloid #11 C. Suspension D. Emulsion Homogeneous or Heterogeneous 15

Example – homogenized milk A. Solution B. Colloid #12 C. Solvent D. Solute Homogeneous

Example – homogenized milk A. Solution B. Colloid #12 C. Solvent D. Solute Homogeneous or Heterogeneous Bonus: hint – temp or permanent this… 16

#13 Example – fresh milk A. Solvent B. Colloid C. Solute D. Temporary Emulsion

#13 Example – fresh milk A. Solvent B. Colloid C. Solute D. Temporary Emulsion Homogeneous or Heterogeneous 17

Example – oil & water A. Solution B. Colloid #14 C. Solvent D. Emulsion

Example – oil & water A. Solution B. Colloid #14 C. Solvent D. Emulsion Homogeneous or Heterogeneous 18

Example – oil & vinegar A. Solution B. Colloid #15 C. Solvent D. Emulsion

Example – oil & vinegar A. Solution B. Colloid #15 C. Solvent D. Emulsion Homogeneous or Heterogeneous 19

Example A. Solvent B. Colloid #16 C. Suspension D. Emulsion Homogeneous or Heterogeneous 20

Example A. Solvent B. Colloid #16 C. Suspension D. Emulsion Homogeneous or Heterogeneous 20

Example - fog A. Solution B. Colloid #17 C. Solvent D. Emulsion Homogeneous or

Example - fog A. Solution B. Colloid #17 C. Solvent D. Emulsion Homogeneous or Heterogeneous 21

Example - smoke A. Solution B. Solvent #18 C. Suspension D. Emulsion Homogeneous or

Example - smoke A. Solution B. Solvent #18 C. Suspension D. Emulsion Homogeneous or Heterogeneous 22

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