1. Chemistry- Skills Check 1

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

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

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

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

6. The image depicts a solution which can hold no more solute
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

7. Suspensions? Suspensions differ from solutions in several ways.#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

8. 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

9. Suspensions? All of the following are#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

10. 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

11. 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.

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

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

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

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

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

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

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

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

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

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

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