The Magic World of Biology and Chemistry
Part I.Review Game: Jeopardy
Day 2:
Mrs. Dorcas Green and Ms. Arielle Darden
Housekeeping
• Put time and effort into your responses (Write Neatly)
• Be sure to complete your data tables
• Be sure to put your units on your measurements. Ex. 59
vs. 59grams
• Percent Change in Mass:
Final Mass - Initial Mass x 100 = _________
Initial Mass
Example. The initial mass of a gummy bear is 5 grams. You
put it in freshwater and check its final mass. You find that
it is 8 grams. What is the percent change in mass?
8g-5g x 100= 3g x 100= 60%
5g
5g
Gummy Bear Exploration
Solute vs. Solvent
• A solution is composed of two parts: a solute
and a solvent.
• Solute- substance that is dissolved within a
solution. (being dissolved)
Ex. Salt, Sugar
Solvent- a substance that dissolves the solute (the
dissolver)
Ex. Water is the universal solvent.
Examples
• Kool-Aid- What is/are the solute(s)?
Solutes and Solvents
Gummy Bear Lab Exploration
Reflection:
• What did you learn from Day 1?
Movement of Molecules,
Osmosis, Diffusion,
Equilibrium, Quantitative and
Qualitative Data, Inertia, Raw
Vs. Boiled Eggs, gummy bears,
Solutions.
The Magic World of Biology and Chemistry
Mentos Exploration
Day 2:
Mrs. Dorcas Green and Ms. Arielle Darden
Video Time
• http://www.youtube.com/watch?v=LWrklFuYn
b0
What is a Geyser?
• A geyser is a hot spring that intermittently sends up
fountain-like jets of water and steam into the air
• Source : http://dictionary.reference.com/browse/geyser
Geysers and Mentos?
• Just as we modeled the process of Osmosis
with gummy bears and potato cores, we are
going to model the process that occurs with
geysers.
Mentos Investigation
• Experiment will be conducted in two parts:
Part I: Which color of Mentos will produce the tallest
geyser?
Part II: Does changing the surface area of the Mentos
affect the height of the geyser?
Why might the experiment be done in two parts?
What is the surface area?
• Definition of Surface area:
• The sum of all the areas of the shapes found within an
object.
• In general, surface area is the outside part or uppermost
layer of something. According to mathematicians,
the surface area is the sum of all the areas of all the shapes
that cover the surface of the object. Shapes include a
square, cube, rectangular prism, and sphere or any polygon
• http://www.math.com/tables/geometry/surfareas.htm
Uses for Surface Area
• Not only is surface area relevant to Math, it is
also useful in the bodies of living organisms.
• For each slide, determine the advantage of
increased surface area for the organism.
Surface Area Example # 1
• Why is it important that the small intestine
has a large surface area?
Surface Area Example # 2
• How is increased surface area in the lungs
important for survival?
Surface Area Example # 3
• Why do clam gills have increased surface
area?
Surface Area Example # 4
• Why is increased surface area in plant roots
and leaves important?
Which leaf would produce the greatest
amount of carbon dioxide in 60
seconds? Explain
Leaf A
Leaf B
Question
• How can we increase the surface area of our
Mentos?
Mentos Investigation
Generate your hypotheses to the following
questions:
Part I: Which color of Mentos will produce the
tallest geyser?
Part II: Does changing the surface area of the
Mentos affect the height of the geyser?
Look at your handouts….
• There is a small portion of the procedure that
you will utilize to get started.
• You will be working to design your own
experiments today!!!!! Get Excited!!!
• We will be testing our hypotheses outside!
Lets Go!