A. Purpose
The purpose of this experiment is to show the student how the amount of energy in a substance can change via endothermic reactions and, in this experiment, exothermic reactions. This experiment hopes to show the student a simple exothermic reaction that will serve as a building block for all future exothermic reaction.
So what exactly is an exothermic reaction? Well, many chemical reactions release energy in the form of heat, light, or sound. These are exothermic reactions (Helmenstine). An exothermic reaction occurs when the energy used to break the bonds in the reactants is less than the energy released when new bonds are made in the products (SMS). So the reaction needs to absorb more energy than it has and causes the temperature …show more content…
As well to give the student a better understanding of exothermic processes. By using everyday household items, the student will be shown a basic exothermic reaction and hopefully, peak there interest in how and why they work. The student most likely will have seen and endothermic or exothermic process, but this experiment will give them a solid understanding of an exothermic processes inner workings.
This topic is of interest to science in two very important ways. One very important example of an exothermic reaction is photosynthesis. To be able to mirror the reaction and be able to study them in a laboratory is very helpful to studying how they work. Second, exothermic reactions occur all day within our bodies so, just like photosynthesis, studying how our bodies work without open someones stomach is very helpful.
If the proper amount of lye and water are mixed together as instructed, then the water and lye will react exothermically and the glass and the glass’ contents will become significantly …show more content…
Observations
1. The instructions said to use 3 tablespoons of lye, however, the student was instructed by the teacher to use 3 teaspoons instead to avoid injury.
2. The Lye that was used in the experiment was clumped together before the water was added to the Lye.
3. The water without the Lye was 28.3 °C (or 82.9 °F or 301 °K).
4. When the water was placed in the beaker with the Lye, the water turned a misty white color.
5. The beaker became too hot to touch within about 20 seconds.
6. The water with the lye reach a maximum temperature of 73.3 °C (or 164 °F or 346 °K)
E. Conclusions
The hypothesis completely supported the hypothesis. Which stated, “If the proper amount of lye and water are mixed together as instructed, then the water and lye will react exothermically and the glass and the glass’ contents will become significantly hotter.” The proper amount of Lye and water were used, exactly as instructed, and both the glass and the glasses’ contents became hotter. Thus, based on the data collected, the hypothesis was
The purpose of this experiment is to show the student how the amount of energy in a substance can change via endothermic reactions and, in this experiment, exothermic reactions. This experiment hopes to show the student a simple exothermic reaction that will serve as a building block for all future exothermic reaction.
So what exactly is an exothermic reaction? Well, many chemical reactions release energy in the form of heat, light, or sound. These are exothermic reactions (Helmenstine). An exothermic reaction occurs when the energy used to break the bonds in the reactants is less than the energy released when new bonds are made in the products (SMS). So the reaction needs to absorb more energy than it has and causes the temperature …show more content…
As well to give the student a better understanding of exothermic processes. By using everyday household items, the student will be shown a basic exothermic reaction and hopefully, peak there interest in how and why they work. The student most likely will have seen and endothermic or exothermic process, but this experiment will give them a solid understanding of an exothermic processes inner workings.
This topic is of interest to science in two very important ways. One very important example of an exothermic reaction is photosynthesis. To be able to mirror the reaction and be able to study them in a laboratory is very helpful to studying how they work. Second, exothermic reactions occur all day within our bodies so, just like photosynthesis, studying how our bodies work without open someones stomach is very helpful.
If the proper amount of lye and water are mixed together as instructed, then the water and lye will react exothermically and the glass and the glass’ contents will become significantly …show more content…
Observations
1. The instructions said to use 3 tablespoons of lye, however, the student was instructed by the teacher to use 3 teaspoons instead to avoid injury.
2. The Lye that was used in the experiment was clumped together before the water was added to the Lye.
3. The water without the Lye was 28.3 °C (or 82.9 °F or 301 °K).
4. When the water was placed in the beaker with the Lye, the water turned a misty white color.
5. The beaker became too hot to touch within about 20 seconds.
6. The water with the lye reach a maximum temperature of 73.3 °C (or 164 °F or 346 °K)
E. Conclusions
The hypothesis completely supported the hypothesis. Which stated, “If the proper amount of lye and water are mixed together as instructed, then the water and lye will react exothermically and the glass and the glass’ contents will become significantly hotter.” The proper amount of Lye and water were used, exactly as instructed, and both the glass and the glasses’ contents became hotter. Thus, based on the data collected, the hypothesis was