Miracle Gro Osmosis Lab

Aim: To be able to identify the five different fruit flavors of skittles by using the sense of taste, while the participants of this experiment are blindfolded.

As stated in the background of the lab, "seeds are considered to be in a period of dormancy, where they metabolize stored energy at a very slow rate while the seed is still considered alive" (Hands On Labs). During germination, the developing plant embryo uses the stored food supply in the seed for cellular energy and growth. Thus, cellular respiration is taking place as the seeds grow. Without water the seeds cannot begin germinating thus the seeds in test tube N did not undergo photosynthesis(Hands On Labs).

Hypothesis: If the potato has a larger surface area: volume ratio, the quicker osmosis will take place and the larger the mass will be at the end of the experiment, therefore the difference in mass of the potatoes from the start of the experiment to the end of the experiment will be larger. Additionally, the potato pieces left in a saltwater solution will decrease in mass, whereas the pieces left in water will increase in mass.

In this task I will be researching the effect that acid rain has on the rate of plant growth. Acid rain is any type of precipitation with a high pH, with high levels of nitric acids. The reason why I had chosen this topic was because acid rain seems to have a great effect on the effect of plant growth, and plants play a very important role in our ecosystem. Acid rain is a major problem in our environment when we are not able to neutralize the acidity.

In lab 3, fundamentals of chromatography, the purpose was to examine how components of mixtures can be separated by taking advantage of different in physical properties. A huge process in this lab was paper chromatography, which was used to isolate food dyes that are found in different drink mixes. The different chromatograms of FD&C dyes were compared to identify which dyes are present in each of the mixes. Chromatograms where made for the known FD&C and for the three Kool-Aid samples. The retention factor for each dye was calculated. F or each of the Kool-Aid flavors, 2.0 g was weighed out from the packet and 5mL of water was mixed in with them each. mL of 0.1% NaCl solution was added to 100mL of bottled water. The six chromatography strips

Human error played a factor because it was not made sure that air was trapped in each bag. In the class data the amount of seeds germinated on day three was higher than the amount of seeds germinated on day four. This is not possible as the amount of seeds germinated cannot decrease, rather they should stay the same or increase. A seed cannot go from being germinated to not being germinated. This could have occurred from miscounting or not accurately counting the number of seeds germinated. If the experiment was completed again, more higher concentrations could be applied to the seeds to see if the data is further supported. Either way the more trials the better and more accurate results, this applies to any experiment. Practical applications of the principles of this investigation may be using the correct concentration for a specific plant or seed. This lab shows that it is necessary to follow the directions and specifications when using the fertilizer miracle

In conclusion, the gummy bear lab experiment was a great exposure to osmosis in real life, and I found it very interesting to see the changes in the gummy bears when we were observing and measuring

Bromination is a type of electrophilic aromatic substitution reaction where one hydrogen atom of benzene or benzene derivative is replaced by bromine due to an electrophilic attack on the benzene ring.

This lab uses a lake simulation to study how the addition of nutrients and toxins can affect the lake, its inhabitants and the surrounding area. There is a strong focus on the addition of Phosphorous and added toxins because both are key elements in growth in lakes. The Virtual lake includes these five simulated species; green algae, cyanobacteria, bosmina, daphnia, and trout. There are two types of phytoplankton in the lake model, green algae and cyanobacteria. Green algae are a very diverse group that are photosynthetic, aquatic, plant like organisms that have a very simple reproductive structure. Green algae growth is a healthy and natural part of a lake’s ecosystem but the addition of nitrogen and phosphorus from fertilizers and other pollutants can cause an excessive growth problem for some lakes.

If I had been on the jury of this case against Pete Anderson I would have handed the jury the verdict that Pete Anderson was in fact guilty. I think that Pete Anderson illegally took archeological artifacts from public land. I think the fact that the location of the cronquistii coincides with the location of the looted Anasazi site, is an indication that Pete Anderson did in fact take the plants from this land area. The three types of daisy’s in the area were confertifolia, tortifolia, cronquistii. Regarding the morphology of these daisies, they each were able to be identified by the size of the “compositase” protein. However, after investigation through gel electrophoresis, the three kinds of plants were not identical. This relates to the

In the lab, “Properties of Hydrates,” the purpose was to compare the properties of several well observable hydrates and to determine if dehydration is a reversible or irreversible change. The lab consisted of attaining a pea-size sample of each compound, burning it over a bunsen burner, and comparing the starting mass and the mass lost after the combustion. These results are important to be able to identify a variety of different chemicals that contain water molecules as part of their crystalline structure. Some can be removed by heating (resulting in evaporation) and some remain mostly unchanged. In this lab the answer will be found.

What are effects of the volume of a potato and the amount of weight it loses when placed in salt solution?

The experiment shall use several concentrations of sucrose solution and a substance known as Methylene blue. A piece of potato/ carrot shall be placed in a boiling tube and the solution shall be poured into it. This tube shall have Methylene blue added into it. After incubation some of this solution shall be taken out with a pipette and inserted into a separate boiling tube containing the same sucrose solution however this solution shall be known as the pre-incubated solution. The drop shall be watched so as to see if the density of the water and concentration of sucrose has increased or not, displaying the water

I bought the seeds two days before the experiment attempting to purchase seeds of the same age with almost identical sizes. However, even though I attempted to control the biological factors, some seeds germinated faster and at a better rate than others. The seeds that germinated better would also consequently give a higher rate of cellular respiration than the rest. I tried to correct this by choosing germinated seeds of almost similar visible size and also added in each respirometer the amount of dry/fresh seeds and beads that would equal to the total volume of germinating seeds and water in a graduated

It justifies the idea that increasing the concentration of sucrose does in fact speed up the rate of osmosis, an therefore increase the mass of the Visking tube. This happens due to the water molecules moving from a high water concentration to a low water concentration. Another reason why this hypothesis is correct is because sucrose particles are too large to go through the membrane therefore the sucrose does not diffuse into the water. According to the mean graph there is a clear outline that indicates constant acceleration, which justifies that the increase of the independent variable affects the dependent