SOLUBILITY AND SOLVENT LAB
Name: ________________________________8____ Date: ______________
OUTCOME #2: Investigate and describe the composition of fluids, and interpret the behavior of
materials in solution.
c• investigate and identify factors that affect solubility and the rate of dissolving a solute in
a solvent
d• relate the properties of mixtures and solutions to the particle model of matter.
OUTCOME #4: Identify, interpret and apply technologies based on properties of fluids
a) describe technologies based on the solubility of materials
Problem: Does the type of solvent affect solubility?
Hypothesis: I think the type of solvent used _______________ affect solubility
because each solvent will have _____________ attractions towards the
____________ .
Variables: manipulated: ______________________________
responding: _______________________________
2-controlled: _______________________________
Materials: oil, water, alcohol, 3-test tubes, 3-stoppers, measuring spoon, solute
(sugar)
Procedures:
1. _measure out 30 mL of water and pour into a ________ ________
2. Add one mL of the solute to the water, put the stopper on and invert the test tube
3.
4.
5.
6.
7.
_______ times to mix. Keep your thumb on the stopper!
Wait up to ____ seconds and see if the solute all dissolved. If solute is dissolved before
30 seconds continue to next step right away.
If all the solute has dissolved, add another mL of solute. Repeat step 2 to 3 until you
have at least 0.5 mL of solute left at the bottom of the test tube at the end of the 45
second wait time.
When you have at least 0.5 mL of solute remaining in the test tube the solution is
saturated. Record the number of mL that DID dissolve into the 30 mL of water.
Dispose of your solution as directed by your teacher. Clean your test tube and
stopper.
Repeat steps 2 to 8 for each solvent provided.
Observations: Sugar: ____g/mL
SOLVENT
_____˚C
Water
(30mL)
AMOUNT
ADDED
(mL)
AMOUNT
DISSOLVED
(____mL=____g)
SOLUBILITY
(___g/30mL@˚C )
SOLUBILITY
(______g/100g@˚C)
(show work)
Oil (30mL)
Alcohol
(30mL)
Analysis:
1. Which solvent dissolved the most solute?
2. Does the type of solvent affect solubility? ______ Use the particle theory to
explain why the solvent (_____________) dissolved the most solute.
Conclusion: I found that the type of solvent ______________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
Changes and errors:
Application:
TEMPERATURE LAB SUMMATIVE ASSESSMENT
Name: _____________________ 8____ Due Date: ______________
OUTCOME #2: Investigate and describe the composition of fluids, and interpret the
behavior of materials in solution.
c• investigate and identify factors that affect solubility and the rate of dissolving a solute in a solvent
d• relate the properties of mixtures and solutions to the particle model of matter.
OUTCOME #4: Identify, interpret and apply technologies based on properties of fluids
a) describe technologies based on the solubility of materials
Problem: How does temperature affect solubility of a solution?
Hypothesis: I think as temperature of the solvent increases the solubility of a
solution will ________________
because _as the temperature increases the ___________ between the atoms
____________ leaving ___________ room for the solute particles.
Variables: manipulated: ______________________________
responding: _______________________________
3-controlled: ________________________________________________________
Materials: water, sugar, measuring spoons, thermometers, ice bath, hot plate,
different hot water baths, test tube, stopper
1. Procedures: _measure out 30 mL of water and pour into a ________ ________
2. Place test tube into the water bath.
3. Add one mL of the solute to the test tube water, put the stopper on and invert
the test tube _______ times to mix. Keep your thumb on the stopper!
4. Wait up to ____ seconds and see if the solute all dissolved. If solute is
dissolved before 30 seconds continue to next step right away.
5. If all the solute has dissolved, add another mL of solute. Repeat step 2 to 3
until you have at least 0.5 mL of solute left at the bottom of the test tube at
the end of the 30 second wait time.
6. When you have at least 0.5 mL of solute remaining in the test tube the
solution is saturated. Record the number of mL that DID dissolve into the 30
mL of water.
7. Dispose of your solution as directed by your teacher. Clean your test tube
and stopper.
Observation: Sugar: _1.6__g/mL
TEMPERATRE
OF SOLVENT
(˚C)
AMOUNT
SOLUTE
ADDED
(mL)
AMOUNT OF
SOLUTE
DISSOLVED
(___mL = ____g)
SOLUBILITY
(___g/30mL@˚C )
SOLUBILITY
(_____g/100g@˚C)
Analysis:
1. Draw a line graph showing the results. The manipulated variable goes on the
____ axis and the responding variable goes on the ____axis.
2.
3. Explain why each test tube was placed back into the water bath?
4. When washing cloth many detergents are powders or liquids. What is a
surfactant? What does a surfactant do? (Use your textbook)
5. Why would people use warm water to wash clothes in?
6. Look up thermal pollution. Compare thermal pollution (solubility of a gas) to
solubility of most solids.
Conclusion: I found that as the temperature of solvent increases solubility will
________________. As seen when the solvent was ___˚C we dissolved _____grams of
sugar and when the solvent was ___˚C we dissolved _____grams of sugar. This is
because as the temperature of a solution increases the solvents particles move
___________ apart thus leaving ______________ room for solute to ______________
into the solvent.
Changes and errors
Application
SKILL and KNOWLEDGE SUMMATIVE ASSESSMENT
Beginning
Acceptable
Proficient
Mastery
You show an incomplete
understanding of the
learning.
Solutions are inaccurate
and unworkable.
You show an adequate
understanding and simplistic
application of the learning.
Solutions contain substantial
errors. Answers are partially
correct.
You show a solid
understanding and relevant
application of the learning.
Solutions contain minor
errors.
You show an
in-depth understanding and
insightful application of the learning
in a variety of ways.
-demonstrates exemplary academic
achievement
-teacher discretion