Peppermint Oil Lab Report

For our science project, we chose to do one that included luminol. Before we started, we found 3 cites, stating,” luminol will preform better in extreme heat than it does in room temperature or ice water.” Also one cite says,” It is used by crime scene investigators to discover spots of blood, even spots that may have been washed.” The last cite writes,” It was concluded that an inverse relationship exists between surface temperature and the reaction rate of the Luminol test.” Our question/ purpose was,” How does temperature affect luminol?” My hypothesis was that I thought that the warm water would affect the luminol more than the cold water.

1. The volume of the gummy bear increased when we put it in water for twenty four hours. Originally, the volume of the bear was 1.75cm3. After the bear was in the water for twenty four hours, its volume increased to 10.5cm3. So, to find the change in volume, you subtract the new amount from the original. 10.5cm3-1.75cm3= 8.75cm3. The change in volume is 8.75cm3.

Due to this fact, the concentration of copper in the solution is able to be calculated by using light absorbance. Since zinc doesn’t absorb any light, we are able to deduce that the greater the absorbance, the greater the concentration of copper.

The purpose of this lab was to make a substitutional alloy coating the penny in a gold color. The color of the penny depends on the Zinc and Sodium Hydroxide solution, and if heat was added or not. We took a copper penny and boiled it in a Zinc and Sodium Hydroxide solution. Then we took the penny out, rinsed it in water, and dried it off. Now the penny was silver. We then took the penny and waved it across a flame causing it to turn gold. Some errors that happened were getting Zinc in our water and over cooking the penny. These could be fixed by rinsing the Zinc off the penny in its solution before taking it out and not heating the penny for as long. A suggestion for improvement would be getting the flame at the lowest temperature possible.

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

The purpose of this experiment was to determine the relationship between tail spine length and hemoglobin levels as well as the relationship between tail spine length and heart rate. The concentration of the hemoglobin in Daphnia is dependent on the oxygen available to them.

What were your controls for this experiment? What did they demonstrate? Why was saliva included in this experiment?

During this experiment, one penny stayed almost the same, while the other one turned green and completely changed. The experiments started with two cups. One was labeled water, while the other one was labeled vinegar. In each cup, paper towels were placed at the bottom. In the cup labeled vinegar, vinegar was added and in the cup labeled water, water was added. Then, one penny was placed in each cup and observed on a span of four days. On the first day, penny A (cup with water) looked the same. Penny B (cup with vinegar) had a strong smell and the penny looked shinier. Later on in the week, penny A looked a little brown but mainly stayed the same. Penny B had some bubbles, rusting, and started to become darker. Toward the end of the experiment,

The purpose of this lab was to identify unknown bacteria cultures using various differential tests, and my unknown bacteria is #17. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways, each was used in a way to help recognize those specifics and identify the unknown cultures. The differential tests used to identify the unknown cultures were Gram stain, Catalase, Mannitol Salt Agar (MSA), Blood Agar, Novobiocin, Coagulase, and DNAse (Alachi, 2007).

1. What happens? - My assumption on how many water drops will fit on the penny before water drops off the side, is that around 30 drops of water, 20 drops of dish oil, and 20 drops of dish oil will fit on the penny with the eyedropper. 2.

When the different gummy candies are placed in water for 24 hours, the size and appearance changes due to osmosis. The mass, volume, and length of the three different gummy candies were measured before and after the experiment, and the changes shown after the experiment were significant. Out of the three gummy candies used in the experiment, the gummy bears showed the least amount change in mass, volume, length, and in average changes. The gummy fruit had the most consistent results out of the candies. The results gathered showed that the gummy fruit had changes that were in the decimals, such as in the average change.

The Effect of Tonicity and Osmosis on Gummy Bears Introduction Gummy bears work the same as a cell’s plasma membrane because they allow the movement of water molecules in and out of the gummy bear. The plasma membrane is known as selectively permeable because it allows movement of certain molecules and blocks the movement of others. Active transport is an example of a movement that requires a carrier protein and the use of energy to move against the concentration gradient. Passive transport is simply the movement of molecules without the use of energy.

Background: In my experiment, I am trying to see how different solutions varying in pH levels will affect the shape and weight of gummy bears. The main ingredient in most gummy bears is gelatin. Gelatin is a collagen. It is derived from animals such as pig skin, cow skin or bones.

2. (5 pts) List and explain the names and affiliations of the various characters/stakeholders in this story – I’m looking for us to use the story to map out the complexities that are generally associated with solving public health puzzles – the stakeholders you list and explain here should apply to many of the cases we consider going forward.

As we answered questions, patient sensitivity or allergic reaction to the essential oil was primarily brought up. We discussed the importance of establishing a potential reaction using the patch skin testing as well as dilution of the essential oil. One individual brought up the concern for an allergic reaction or sensitivity for other patients who would not be receiving the aromatherapy, but would be in the general vicinity.