Part I.Review Game: Jeopardy

Day 2:Mrs. Dorcas Green and Ms. Arielle Darden

The Magic World of Biology and Chemistry

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 MassExample. 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 andQualitative Data, Inertia, RawVs. Boiled Eggs, gummy bears,Solutions.

Mentos Exploration

Day 2:Mrs. Dorcas Green and Ms. Arielle Darden

The Magic World of Biology and Chemistry

Video Time

• http://www.youtube.com/watch?v=LWrklFuYnb0

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 InvestigationGenerate 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!