The Separation Challenge is an experiment involving the use of background knowledge of mixtures, properties of matter, and creativity in order to find a solution to separate three different substances layered on top of each other within a container. The experiment required a matter of coming up with a solid and thought out procedure to successfully separate the three substances individually within an amount of time using various lab materials and technology accessible at the time. Background A mixture, according to definition, is a combination of components and substances mixed together to form one particular substance, uniform or not. Mixtures can be classified down to two types, homogeneous and heterogeneous. Homogeneous mixtures are generally uniform, or have the same consistent composition throughout, whereas heterogeneous mixtures are not entirely defined and vary in …show more content…
The experiment was built in order to test our abilities to efficiently and correctly execute a separation of mixtures through deep brainstorming and teamwork. Hypothesis The hypothesis that was formed in this experiment was that decantation and distillation were the techniques that would be successful in separating the three layered substances. The oil on top of the mixture was to be decanted solely, and the salt and sand layers would be distilled and separated together on filter paper on top of boiling hot water. The reason that the oil is decanted is because it doesn’t mingle with the salt and sand layers, and in addition it was the top layer, which was thought to have been easy to separate first. And as for the sand and salt, sand doesn’t mix and dissolve in water compared to salt, which does in fact dissolve, so distillation was thought to be the proper solution to separating the two
Thorough analysis of the graph displayed enough evidence suggesting that an increase in substrate concentration will increase the height of bubbles until it reaches the optimum amount of substrate concentration, resulting in a plateau in the graphs (figure 2). Hence; supported the hypothesis.
The objective of this experiment was to perform extraction. This is a separation and purification technique, based on different solubility of compounds in immiscible solvent mixtures. Extraction is conducted by shaking the solution with the solvent, until two layers are formed. One layer can then be separated from the other. If the separation does not happen in one try, multiple attempts may be needed.
Chromatographic process occurs due to differences in the distribution constants of individual sample components. It is the science which studies the separation of a mixture of molecules based on differences in their structure or composition.
A group of 8th graders had to figure out what was in a Mystery Mixture, but they had no idea what it was. There were nine different substances that they had to work with. The substances were Epsom Salt, Chalk, Washing Soda, Road Salt, Table Salt, Citric Acid, Sugar, Vitamin C, and Baking Soda. The group believes the mystery mixture was Citric Acid & Baking Soda.
The Lettuce Challenge Experiment Design faced several errors that could have altered the course of the experiment. The experiment had tolerable results, however, they may have been more accurate if the errors had been refined. The first error that was noticed was the fact that the lettuce was not watered during the weekend. In addition, the lettuce was not given extra water on friday. The lack of water could have affected the growth of the plant. The amount of water given to the experimental plant differed from the control as well. The control was given 10 extra ml of water on friday while the experimental plant was not. Because the amount of water given to the control was different to the plant that was experimented
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
The DNA Isolation experiment was to examine the extraction of DNA from fruits. Three fruits were used to extract DNA using different solutions. DNA was found in only one fruit among the three because of various reasons, including inaccuracy during the experiment. This experiment showed the process of how to extract DNA from organisms that could be used for PCR. The PCR stimulation was to investigate the criminal behind the assault case using gel electrophoresis. In order to find the criminal between two identical brothers, blood samples from both parties were collected for DNA fingerprinting. The purified DNA of the two suspects were placed in agarose gels and electrophoresis was performed to determine who was guilty. The evidence that matched up to the suspect was the criminal. This experiment showed how DNA fragments are separated from each other depending on size and charge.
The mixture was poured through a weight filter paper and Sucrose washed with a 5ml of dichloromethane. The resulting solid was left in a breaker to dry for one week, to be measured. Left it in the drawer to dry out for a week and weighted it to find the sucrose amount recovered amount.
For this experiment we have to use physical methods to separate the reaction mixture from the liquid. The physical methods that were used are filtration and evaporation. Filtration is the separation of a solid from a liquid by passing the liquid through a porous material, such as filter paper. Evaporation is when you place the residue and the damp filter paper into a drying oven to draw moisture from it by heating it and leaving only the dry solid portion behind (Lab Guide pg. 33.).
Describe the experiment. What is the most important thing you learned from this experiment? Provide an example (from the experiment to explain your answer).
Once the mixture had been completely dissolved, the solution was transferred to a separatory funnel. The solution was then extracted twice using 5.0 mL of 1 M
more results. The trend in our interviews made its presence in the actual experiment. We were
At each step above, the experimenter should bear in mind the impact that his or her decisions will have on the cost, feasibility, and precision of the experiment [1].
We separated into groups of two each, making sure that we had the following materials for the lab: graduated cylinder, plastic sandwich bag, starch solution, twist tie, 500-mL beaker, iodine solution, and a pair of goggles and an apron (for the person handling the iodine solution).
... mixtures are formed when oil is the solvent is because oil is made from non polar molecules that aren't chemically bonded (opposite of water). It also doesn't create homogeneous solutions with salt and sugar is because it is too heavy and there are other particle attractions already formed, so when salt and sugar are poured into the oil(solvent), the particles aren't able to form attractions. In conclusion, I am going to repeat my hypothesis and say that the dissolvability of a solute into a solvent all depends on the solvent and the molecules in the in the solvent. Also, I conclude that substances dissolve into solvents that are already pure with spaces to allow the attractions to happen.