Name: _____________________________________________ Period: __________ Date Due: November 10, 2014
SWEET SOLUBLE TREATS?
1. PONDER . . . just think . . .
Water is a SOLVENT . . . Sugar is A SOLUTE . . .
Candy is made of Sugar . . . Candy is a SOLUTE . . . Is this true?
2. RESEARCH: Solutions and Mixtures from Chem4kids.com
Before we dive into solutions, let's separate solutions from other types of mixtures. Solutions are groups of molecules that are
mixed and evenly distributed in a system. Scientists say that solutions are homogenous systems. Everything in a solution is evenly
spread out and thoroughly mixed. Heterogeneous mixtures have a little more of one thing (higher concentration) in one part of the
system when compared to another.
Let's compare sugar in water (H2O) to sand in water. Sugar dissolves and is spread throughout the glass of water. The sand sinks to
the bottom. The sugar-water is a homogenous mixture while the sand-water is a heterogeneous mixture. Both are mixtures, but only
the sugar-water can also be called a solution.
Making Solutions
A simple solution is basically two substances that are evenly mixed together. One of them
is called the solute and the other is the solvent. A solute is the substance to be dissolved (sugar).
The solvent is the one doing the dissolving (water). As a rule of thumb, there is usually more
solvent than solute. Be patient with the next sentence as we put it all together. The amount of
solute that can be dissolved by the solvent is defined as solubility. That's a lot of "sol" words.
3. HYPOTHESIZE: Consider different candies and PREDICT which ones would be more soluble in water than others. Samples
that you will be making observations about include: Nerds, M&Ms, Whoppers, Skittles, Reese’s Pieces, Candy Corn, Tootsie Rolls,
Dots, Life Savers, Necco Wafers, and possibly others.
4. PROCEDURE: Observations will be made regarding each candy. Observations should include a description of the INSIDE as
well as the OUSIDE of the candies BEFORE and AFTER being added to the solvent.
5. OBSERVE AND RECORD YOUR QUALITATIVE AND QUANTITATIVE DATA
LAB
#
NAME
BEFORE
OUTSIDE
BEFORE
INSIDE
TIME OF
OBSERVATION
MINUTES IN
SOLVENT
AFTER
OUTSIDE
AFTER
INSIDE
Name: _____________________________________________ Period: __________ Date Due: November 10, 2014
6. ANALYZE YOUR QUALITATIVE AND QUANTITATIVE DATA
L
A
B
#
NAME
HOMOGENEOUS
OR
HETEROGENOUS?
CANDY
SOLUTION
BEFORE
AFTER
DEGREE OF
SOLUBILITY
RANK
ACCORDING
TO
SOLUBILITY
7. MAKE INFERENCES AND DRAW CONCLUSIONS
Consider Steps 5 and 6 above. Consider the data you collected initially and the analysis you did which included classification and
ranking of the different candy. Draft a Drawing Conclusion Paragraph. Include your initial predictions from Step 3. State whether
your predictions were correct or not. Choose the candy you ranked as #1, #5, and #8. Explain your reasoning as to why they were
more (or less) soluble when compared to each other.
Why was it important to have a BEFORE sample of candy during this experiment?
Why was it important to add the same amount of water during the experiment?
Did the SAME amount of candy get added to each cup? How would you know?
8. INQUIRE FURTHER – CONDUCT MORE RESEARCH
Research the ingredients to YOUR favorite candy (it does NOT have to be one of the candies you researched here). List the
ingredients to your favorite candy. Conduct the same experiment with your candy at home and record your observations. Classify
your candy as soluble or not soluble and as being homogeneous or heterogeneous. While conducting this research, if YOU formulate
questions, write them down. Research via a search engine the answers to you questions.
Have a SAFE and HAPPY HALLOWEEN