Solutions: The Homogeneous Mixtures : An Online Treasure
Hunt for 3rd Year High School (Science)
Authored by P. Mosquite and P. Arinto
Introduction
Sugar melting into your coffee. Powdered juice dissolving in water. Soap
being washed away from your body. Your dirty clothes being washed clean.
These are examples of solutions being formed or produced. What is a solution?
What are its components, properties, types? We will find out in this online
treasure hunt. After working on this activity, you should be able to recognize
solutions around you and appreciate their value.
The activity is simple. Working in groups of three or four, answer the questions
below by reading the websites listed (under “Resources”). Note that the websites
are not arranged the same way the questions are arranged. Read the questions,
click on the website URLS, and read the websites carefully. Write down your
answers neatly and be ready to discuss them in class. And then proceed to answer
the Big Question.
Questions
- What are the components of a solution? Give an example of each.
- Why are solutions called homogeneous mixtures?
- Describe the changes that occur in the process of solution formation. Or
what happens when the solvent and solute get together?
- What factors affect solubility?
- What term is used to describe liquids that do not dissolve in each other
(for example, oil and water)?
- List down the differences among saturated, unsaturated, and supersaturated
solutions.
- What are the colligative properties of a solution? What do these
properties have in common or why are they grouped as “colligative”?
- What is the difference between molarity and molality?
Resources
Solutions- Homogeneous Mixtures
http://www.public.asu.edu/~jpbirk/CHM-113_BLB/Chpt13/sld001.htm
Solubility Factors
http://www.citycollegiate.com/chapter3d.htm
Chemical Solution
http://encyclopedia.thefreedictionary.com/Chemical%20solution
Solution Composition
http://www.sparknotes.com/chemistry/solutions/composition/section1.html
Solubility
http://www.ilpi.com/msds/ref/mixture.html#homogeneous
Colligative Properties of Solutions
http://www.sparknotes.com/chemistry/solutions/colligative/section1.html
Introduction to Solutions
http://members.aol.com/profchm/solintro.html
Solutions
http://www.physchem.co.za/Kinetic/Solutions.htm#Dissolution
The Big Question
Look around you (your house, school, market, etc.) and see how many solutions
you can find. Identify the solvents and solutes in each solution. If you can,
determine the concentration of the solute (sometimes this is indicated in the
container).
Present your answers in the form of a table, thus:
| Name of the Solution |
Solvent |
Solute |
Amount of Solute (Concentration) |
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Do this activity as a group—that is, the same group that did the online
treasure hunt. Make sure everybody contributes to the list. You will get one
point for every correct item in every column of the table. This means the more
correct items, the higher your score.
Submit your table (with the names of group members please) tomorrow. Happy
hunting for solutions!
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