Summary: Crush The Can Experiment Write-Up

When it is shaken, it fizzes, and causes pressure, and overflows releasing the carbon dioxide. It

The topic of research is, “how fast does an Alka-Seltzer tablet make gas?”. In the experiment, the scientists will be measuring the chemical reaction rates that occur, when 1 Alka-Seltzer tablet is placed in a specific temperature of water. The independent variable during the experiment will be the temperature of the water (degrees Celsius). The dependent variable during the experiment will be, the rate in which gas is produced (in seconds). The constants of the experiment, will be the amount of water used and the Alka Selter compound. The control in the experiment is water. Units used while timing the productivity of gas from an Alka-Seltzer tablet in different temperatures is, seconds.

How does the temperature of water used to dissolve an Alka-Seltzer tablet affect the amount of time it would take for the tablet to completely dissolve?

The topic that the scientist has researched is the reaction rate of different particle sizes. In the experiment, the scientist will discover how the particle size of Alka Seltzer affects the rate of chemical reaction with water. The independent variable in the experiment is the particle size of the Alka Seltzer, while the dependent variable is the rate of reaction, or the volume of Carbon dioxide. The volume of carbon dioxide will be measured in ml. Also, a few of the constants in the experiment will be the amount of water, and amount of tablets.

2. The color of the copper carbonate hydrate as it was heated can help identify the product?

By determining the change in enthalpies for each step, we were able to add all of the individual enthalpies together to get the change in enthalpy for our goal reaction. The results can be seen in Figure 1. We were able to calculate qsol, qrxn, and ΔH using:

This article concerns the Stanford Prison experiment carried out in 1971 at Stanford University. The experiment commenced on August 14, and was stopped after only six days. It is one of the most noted psychological experiments on authority versus subordinates. The studies which emerged from this have been of interest to those in prison and military fields due to its focus on the psychology associated with authority.

Since the beginning of the human existence, man has always dominated and ruled over one another be it empires, corporations, or small groups. Authority and obedience has always been a factor of who we are. This natural occurrence can be seen clearly through the psychological experiments known as The Milgram Experiment and the Stanford Prison Experiment. Both of these studies are based on how human beings react to authority figures and what their obedience is when faced with conflict.

1. What type of macroscopic evidence for chemical change did you observe during this experiment? Give at least three different examples.

Society and government require people to be obedient towards authority, but is it always the best thing to do? During the aftermath of World War II many of the major leaders of the Nazi regime were put on trial for crimes against humanity (History.com). These trials were known as the Nuremburg war trials, were most of the convicted proclaimed that they were “just following orders” (McLeod 584). Being an accomplice to a crime is also against the law. In the Nuremburg trials, those accused were not breaking the law that their government had created, they were actually following it. These individuals had to follow their orders and ignore their own moral laws to prevent disobeying the law. This shows how people need to focus more on following their

The experiment that was done was to figure out “Does the amount of calcium chloride affect the temperature of water?” For the procedure, the experiment asked to record the initial temperature of 75 mL of water. The first trial said to add zero scoops of calcium chloride and stir for two minutes to record the temperature. Once the first temperature was recorded, it must be written from the difference between the initial temperature and the new temperature. Next, it asked to add one scoop of calcium chloride and stir for two minutes and record. Lastly, it told us to repeat the same steps until we had three calcium chloride scoops in the beaker and repeat for two more trials for accurate results. To sum up the experiment, it said to record the average change in temperatures to the class averages to graph a bar graph comparing both of the averages. That’s the procedure on how to conduct the experiment correctly.

When given permission take the test tube, soda bottles, index cards, and the remaining 25 mentos, to the designated area

For the third time select the flask and choose Condenser from Distillation from the menu and for last time select the flask Distillation Take-off from the dropdown option.

Abstract — This experiment was conducted to familiarize the students with the procedures regarding distillation—to be more precise, the separation of ethanol from an alcoholic beverage—using a distillation set-up consisting of boiling chips, a Bunsen burner, a condenser, a thermometer and several other materials. In the end, it was discovered that one may actually separate a homogeneous mixture, given that the components of said mixture differ in volatility and that they utilize a complete distillation set-up and follow laboratory safety rules and regulations.

The kettle has to a certain degree impacted the society. The invention of the electric kettle has directly and indirectly created a vast variety of jobs in numerous industries. Soon after the invention of the automated kettle, in 1958 Instant noodles was invented in Japan. This become quite popular as the kettle made this consumable very simple and efficient to prepare and eat. This lead to a large industry of ‘supermarket convenience foods’ being produced as not only large food processing companies, but correspondingly new companies were created and they invested into the concept, making their own versions and thus creating new jobs. The invention of the kettle furthermore lead to more jobs as hundreds of companies