6. Error Analysis
In the lab Much Color Ado About Nothing, the wrong amounts of of oil and water were used in the graduated cylinders. Although this would not change the effects of the polarity between the water, food coloring, and oil, the experiment was redone using proper amounts before our data was recorded.
Also, in the Antigravity lab, not enough paper towel was used for the towel to retain a cylindrical shape and it fell down into the water. Before the experiment proceeded, a new cylinder of paper towel was made and the experiment was revised.
5. Data and Observations
Looney Balloony- When the balloon was placed near the stream of water, the steady stream of water was bent towards the balloon. As the balloon moved, the stream of water followed it.
Dish and Clips- When the paper clips were carefully placed in the water they floated along the surface. If not placed at the proper angle and very carefully, the paper clips would sink.
Stir it Up- When the stirring rod was turned at a diagonal, and at a certain angle, the water, would flow along the stirring rod and not drip onto the table. Almost all of the water poured along the rod successfully into the beaker.
Stop on a Dime- The dime held up o thirty nine drops of water with out spilling over. When the number of drops reached forty, they began to run over the edges of the dime, one at a time so that thee dime retained most of the water and a dome shaped bubble stayed on the dime’s face.
Much Color Ado About Nothing- The food coloring mixed with the water and turned it a light pink color. (The food coloring was red.) The coloring did not mix with the oil, however, it remained in drops and sunk to the bottom of the test tube. The oil did not change color.
To Wax Philosophic- The puddle of water tat was dropped on the wax paper stayed entirely together but became oblong as it was pulled along the paper. At one point, the drop split in two but quickly, the drops slid back together to reform the original bubble.
Antigravity- The roll of paper towel remained standing up right in the shallow dish of water while the water soaked upwards into the paper towel against gravity. Once the water had raised a few inches into the paper towel, the bottom was weak and heavy with water. This made the towel fall.
Thursday, October 21, 2010
Wednesday, October 20, 2010
Lab Report rewrite
William Spencer
Ellie Hogg
Topher Robinson
Olivia Jacobs
September 18, 2010
Watered Down Puns
1. Introduction
Water is a universal solvent and a basic necessity for all forms of life. Water also has many properties that affect the way it behaves under certain circumstances. Some of these properties are adhesion, cohesion, surface tension, capillary action, and polarity (hydrogen bonds). Adhesion can be described as attraction between molecules of the same substance. Surface tension is very like cohesion in that it is related to the effects of water bonding with itself and other molecules. Capillary action is the ability of water to travel against gravity by means of adhesion and cohesion. Polarity is when an atom has a positive and negative charge and is therefore attracted to other charged molecules. These are properties of water that we will be exploring in our labs, and the ones that make water such a unique compound. This leads us to ask; Under what circumstances will these properties be exhibited.
2. Hypotheses
To Wax Philosophic-
If the disposable pipette is used to pull the water droplet around on the wax paper, then the drop will remain in a dome shape and all the water molecules will stay together instead of being separated.
Stir it Up-
If the water is slowly poured down a stirring rod that sits at approximately 40 degree angle inside the mouth of a graduated cylinder, then the water will flow down the rod and into the graduated cylinder without spilling or dripping from the rod.
Antigravity-
If the paper towel is made into a vertical cylinder and set in a metal pan of shallow water, the water will absorb upward into the paper towel, rising against gravity.
Much Color Ado About Nothing-
If the dropper is used to drop red food coloring into both a test tube containing 5ml of water and a test tube containing 5ml of an unknown oil, then the coloring will, in water, dissolve, changing the color of the water to red, and , in oil, the drops will float on top of the oil and remain in droplet form.
Stop on Dime-
If water is slowly dropped onto the face of a dime, approximately 30 drops of water will stay on the dime’s face before the water spills over the edge.
Dish and Clips-
If the forceps are used to place the metal paper clip on the surface of water in a small dish, then the paper clip will sink.
Looney Balloony-
If the balloon is rubbed with a paper towel and placed near a running stream of tap water, then the water will move towards the balloon and flow over it.
Ellie Hogg
Topher Robinson
Olivia Jacobs
September 18, 2010
Watered Down Puns
1. Introduction
Water is a universal solvent and a basic necessity for all forms of life. Water also has many properties that affect the way it behaves under certain circumstances. Some of these properties are adhesion, cohesion, surface tension, capillary action, and polarity (hydrogen bonds). Adhesion can be described as attraction between molecules of the same substance. Surface tension is very like cohesion in that it is related to the effects of water bonding with itself and other molecules. Capillary action is the ability of water to travel against gravity by means of adhesion and cohesion. Polarity is when an atom has a positive and negative charge and is therefore attracted to other charged molecules. These are properties of water that we will be exploring in our labs, and the ones that make water such a unique compound. This leads us to ask; Under what circumstances will these properties be exhibited.
2. Hypotheses
To Wax Philosophic-
If the disposable pipette is used to pull the water droplet around on the wax paper, then the drop will remain in a dome shape and all the water molecules will stay together instead of being separated.
Stir it Up-
If the water is slowly poured down a stirring rod that sits at approximately 40 degree angle inside the mouth of a graduated cylinder, then the water will flow down the rod and into the graduated cylinder without spilling or dripping from the rod.
Antigravity-
If the paper towel is made into a vertical cylinder and set in a metal pan of shallow water, the water will absorb upward into the paper towel, rising against gravity.
Much Color Ado About Nothing-
If the dropper is used to drop red food coloring into both a test tube containing 5ml of water and a test tube containing 5ml of an unknown oil, then the coloring will, in water, dissolve, changing the color of the water to red, and , in oil, the drops will float on top of the oil and remain in droplet form.
Stop on Dime-
If water is slowly dropped onto the face of a dime, approximately 30 drops of water will stay on the dime’s face before the water spills over the edge.
Dish and Clips-
If the forceps are used to place the metal paper clip on the surface of water in a small dish, then the paper clip will sink.
Looney Balloony-
If the balloon is rubbed with a paper towel and placed near a running stream of tap water, then the water will move towards the balloon and flow over it.
Thursday, October 14, 2010
Gerber Baby Food
Last week we began a project where we tested for the presence of certain chemicals in Gerber Baby Food Infant Meals. We found some pretty astonishing things and decided to write letters to Gerber describing what we found. Here is mine.
3 Pirate Parkway
Berea KY, 40403
October 12, 2010
START HEALTHY, STAY HEALTHY™ Resource Center
445 State St.
Fremont, MI 49413-0001
Dear START HEALTHY, STAY HEALTHY resource center,
It has come to the attention of the sophomores at Berea Community High School in Kentucky that some of the chemicals found in your baby food do not meet the nutritional value standards of most parents. We are worried that your customers are unaware of the presence of and effects of some of these chemicals found in your baby food. Infant nutrition is a serious concern among most parents, especially in a nation where obesity rates are higher than they have ever been in the United States.
We used a series of solutions that, when added to your baby food, changed the color of the product. The color change indicated the presence of polymers and the lack there of other important nutrients such as proteins and amino acids. Some of the chemicals detected in your product are large amounts of monosaccharide, (simple sugars), and disaccharides (complex sugars) that can seriously injure a baby’s health and lead to consequences later in life. Not only that, but the presence of polysaccharides (starches) and carbohydrates were extremely prevalent in your “healthy” infant meals over other important nutrients for child development.
Some of the foods we tested were bananas, mixed chicken and vegetables, peas, and potatoes. We found that in infant meals such as mixed chicken and vegetables, there was an astonishing lack of protein and in meals such as sweet potatoes, there was an over abundance of carbohydrates and starches. It is common knowledge that these things are detrimental to the health of average people, and therefore utterly destructive to the health of developing bodies as well as developing brains.
For a company whose motto is “START HEALTHY, STAY HEALTHY”, it appears that the health of your consumers is not a priority, but an option. We, the students of Berea Community School, suggest you make a few improvements in order to benefit the health of countless babies in America. Another option might be to make it clear to your customers that the food you are selling them is not of quality, but processed and lacking in vital nutrients. We suggest that you instigate these changes immediately or to somehow make amends with the thousands of babies who are already experiencing the negative effects of Gerber baby food.
Sincerely,
Olivia C. R. Jacobs
3 Pirate Parkway
Berea KY, 40403
October 12, 2010
START HEALTHY, STAY HEALTHY™ Resource Center
445 State St.
Fremont, MI 49413-0001
Dear START HEALTHY, STAY HEALTHY resource center,
It has come to the attention of the sophomores at Berea Community High School in Kentucky that some of the chemicals found in your baby food do not meet the nutritional value standards of most parents. We are worried that your customers are unaware of the presence of and effects of some of these chemicals found in your baby food. Infant nutrition is a serious concern among most parents, especially in a nation where obesity rates are higher than they have ever been in the United States.
We used a series of solutions that, when added to your baby food, changed the color of the product. The color change indicated the presence of polymers and the lack there of other important nutrients such as proteins and amino acids. Some of the chemicals detected in your product are large amounts of monosaccharide, (simple sugars), and disaccharides (complex sugars) that can seriously injure a baby’s health and lead to consequences later in life. Not only that, but the presence of polysaccharides (starches) and carbohydrates were extremely prevalent in your “healthy” infant meals over other important nutrients for child development.
Some of the foods we tested were bananas, mixed chicken and vegetables, peas, and potatoes. We found that in infant meals such as mixed chicken and vegetables, there was an astonishing lack of protein and in meals such as sweet potatoes, there was an over abundance of carbohydrates and starches. It is common knowledge that these things are detrimental to the health of average people, and therefore utterly destructive to the health of developing bodies as well as developing brains.
For a company whose motto is “START HEALTHY, STAY HEALTHY”, it appears that the health of your consumers is not a priority, but an option. We, the students of Berea Community School, suggest you make a few improvements in order to benefit the health of countless babies in America. Another option might be to make it clear to your customers that the food you are selling them is not of quality, but processed and lacking in vital nutrients. We suggest that you instigate these changes immediately or to somehow make amends with the thousands of babies who are already experiencing the negative effects of Gerber baby food.
Sincerely,
Olivia C. R. Jacobs
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