Blood Stained Tee Shirt Collection of item: I would wear disposable latex gloves to packaged the blood stained tee shirt into a plastic or airtight container. I would store it in a cool location until it was delivered to the laboratory. Processing of item: 2. Handprint on car Collection of item: I would apply powder to the location of the handprint and then I would lift it with a broad piece of adhesive tape.…
The purpose of this lab is to examine cross sections from the leaves of C3 and C4 plants and to determine the morphological differences between them while relating those differences to their metabolism. In C3 plants the carbon dioxide is first incorporated into a 3-carbon compound. Their stomata are open during the day and photosynthesis takes place throughout the mesophyll cells. In comparison C4 plants, the CO2 is first incorporated into a 4-carbon compound. Their stomata are open during the day and photosynthesis takes place within the inner cells.…
Comparisons: Effect of crushed vs. whole tablet: The crushed tablet reacted faster because its surface area is smaller, allowing the particles to react faster with the water. The crushed tablet also produced frothy bubbles all over the water, whereas the reaction (bubbles) of the whole tablet was primarily around the tablet in the water. Temperature effect: The reaction was extremely slow in the cold water as molecules do not move as fast in cold water.…
The null hypothesis overrides our assumption from the beginning of the…
Quentin Flattmann 9/25/15 Biology 9 Mr.Rosenfeld The Paper Towel Lab Background: Paper towels are in almost every household in the U.S. Each year over 13 billion pounds of paper towels are used in this country. This means the average person uses over 43 pounds of paper towels each year. Paper towels are part of daily life: it’s important to know which brand is the best.…
Red Dye 1 Red dye 1 is most likely a polar covalent molecule since we have found that it dissolves into water but does not break apart into ions. Just because it dissolves in water does not make it solely polar covalent, but since it has a relatively low conductivity, 534 mS/cm in the 0-20000 range, then it most likely is polar covalent. This is further confirmed with the fact that it does not react with NaOH, NaCl, or AgNO3, all ionic substances. The red dye does not react with NaOH since there was no color change when added, and the conductivity simple rose as the NaOH was added, due to the fact the excess ions were being added to the solution and not reaction at all.…
The Case of the Mix-Matched Chemicals Hypothesis: By measuring the pH of the unknown and known chemicals, the types of chemicals in the unknown bottles will become known. Purpose: The purpose of this experiment is to determine the type of chemicals that are inside the mislabeled bottles. Materials: • pH strips • 8 bottles of known chemicals: o silver nitrate o iron (III) nitrate o copper (II)…
CONCLUSION: Two weeks ago, Soundings XVI performed Lab Experiment Number Two. Lab Experiment Number Two was similar to the previous, Lab Experiment Number One. The prompt was to compare the results of pennies dropped in water, versus the result of pennies being dropped into milk, both at 100 mL. The main purpose of this lab was to further discuss more scientific parts of this lab, such as the surface tension when the cylinder was close to overflowing for both the milk and water. Before performing this lab, my group and I created a hypothesis to reflect upon and to state what we believed would dictate the results.…
All of this matters and is important to know about because it is key to understand the background of the experiment beforehand. This investigation relates to past research based on the…
Imagine a whole week without your favorite social media site. In the world live in it is becoming ever so harder to put down the social media. In this deprivation assignment I had to give up snapchat and it was a challenge. I've been starting to have a mental addiction to snapchat in the previous weeks and this assignment gave me a great opportunity to challenge myself. In this experiment It not only gave me a break from snapchat but also a better understanding of Siddhartha’s own journey in Hermann Hesse’s novel Siddhartha (1922).…
The purpose of this experiment was to discover if Crayola Washable Markers are really nontoxic, or even as safe as the dyes used in food. To answer this question, we used paper chromatography to identify the dyes in blue, orange, and green Skittles Sweets and Sours candy and Crayola Washable Markers. In this paper chromatography experiment, the mixture to be separated was spotted 1.5 centimeters from the bottom of chromatography paper, which was then dipped in the solvent, a 0.1 percent salt solution. The solvent then moved up the filter paper via capillary action and carried the mixture's pigments with it (Rosen and Gothard, 2010). Each pigment has a unique retention factor or Rf, a ratio between how far a pigment travels to the distance…
Tap water VS Bottled water, what’s safer to drink? By Reann Burgun Abstract: The purpose of this experiment is to see which type of water is safest to drink. Firstly I will take bacteria samples from my chosen types of water and then see which grows the most contaminants, this will then tell me the cleanest water to drink.…
The purpose of this project is to see which liquid evaporates at the fastest rate, when it is directed toward the sunlight. People should care about this project because, for example if you are stranded on an island and you only have sprite, apple juice, and cooking wine then you would need to know which one will last the longest. This can impact your daily life because most people end up leaving their drinks all over the kitchen and forgetting about it. They come back the next day realizing that they left it out, and they are left wondering if the liquids are still good.…
It involves with seeing and hearing. Defining the problem is when you identify a conflict that requires a solution to be solved. A hypothesis is a proposed explanation based on the evidence and observation. Testing the hypothesis is when we experiment and try to prove that our theory is correct. Gathering evidence is the process of recording the information gathered during the experiment.…
PURPOSE/QUESTION The question that we will answer using this laboratory report is, “How is the rate of dissolving sugar affected by changing the temperature of the water, changing the rate of stirring, and changing the size of the crystal?” The independent variable of each laboratory experiment is different, however they are all being changed to get consistent and effective results for one dependent variable. The three independent variables are the temperature of water, rate of stirring and size of the crystal and the dependent variable of the all the experiments is the rate of sugar dissolving. HYPOTHESES Below are the laboratory experiment hypotheses that we have formed as a group to figure out what will happen to the rate of dissolving under…