Report For Exothermic Lab Report

This lab was conducted with the purpose of confirming the trait of homeostasis among goldfish. During the experiment, it was recorded that the fish would increase gill movement when placed in colder water two out of the three trials. However, the results showed no significant difference in gill movement in various temperatures of water. This has very little effect on the broad field of science since our only three trials were performed and may have included human error in the trials.

This information has massively help to answer by explain the difference between endothermic and exothermic in common language which also helped me know why an exothermic reaction can be used to heat food but an endothermic reaction cannot.

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?

Endothermic reactions are accompanied by the absorption of heat. The dissolving of ammonium nitrate in water is an example of an endothermic reaction. The solution resulting from this mixture is colder than either the ammonium nitrate or the water. This is the simple explanation of what happens in an instant ice pack. The more detailed information will be discussed in the following paragraphs.

Is this reaction endothermic or exothermic? What does that mean and how do you know? (~3 sentences)

In this experiment you will observe some physical and some chemical changes. You will observe that energy must be used to start some chemical reactions, and that it is produced in others.

4) Heating favours endothermic reactions. As the reactant “Co(H₂O)₆²⁺” was heated, the solution changed from light red to dark purple. This suggests that the equilibrium shifted right. Therefore, the forward reaction is endothermic.

To learn about standard enthalpies of formation and using this to predict if the reaction is exothermic or

Endothermic and Exothermic reactions release or absorb energy, the graph above shows the way in which the chemical energy changes.

I believe that he will be able to self correct with his answer to question 1, and I also think that he may be able to self correct with question 2. I will allow him to use notes to guide his thinking so that he can reference what we discussed in class, leading him to be able to master the objective of correctly categorizing a reaction as endothermic or exothermic. However, I also provided an additional question to scaffold his thinking on question 2. I told him to “use the table to guide your thinking. What is happening to the temperature?” If he is not able to correct his mistake by himself, he can use this question to drive him back to the data to observe it once again and the to correctly justify his answer with evidence from the

This means that, if the substance and the chemicals inhabiting the substance deal with a certain change in their environment, they react in ways to try and either fight off that change or adjust to the change so that there is a balance in the new setting. For example, the solubility of CO2 is greater in cold water vs. hot water. This is because when the temperature rises above the level CO2 is already capable of dissolving from the body of water, the heat reaction causes the solubility ability of CO2 to decrease making the reaction exothermic. Now if the temperature is lower than the average level of heat that can cause the CO2 to separate from the liquid substance, than the solubility increases and the reaction becomes endothermic since

This experiment can create an endo and exothermic reaction. “The endothermic reaction means that the temperature drops, but it will drop slowly”. An endothermic reaction happens when energy is used to break all of the reactants and break away from every single particle in the substance causing the temperature to drop. An exothermic reaction is when the temperature rises and just like the endothermic reaction it will rise slowly. An exothermic reaction is very similar to an endothermic reaction, but

Results The Armadillidium Vulgare population had statistically significantly population distributions while under the variety of environmental stimuli they were exposed to (Table 1). At the end of the thermal response experiment, it was documented that a significant portion of the test population had migrated to the cooled testing chamber as opposed to the heated chamber (Figure 1). Although the light stimuli experiment illustrated a weaker preference of environmental stimuli, a major portion of the population did migrate to the darkened chamber as opposed to the chamber exposed to light (Figure 2). In addition, the calculations of the class data resulted in a strong suggestion that the stimuli tested were statistically different, with an

Introduction: The theory behind this experiment is the heat of a reaction (∆E) plus the work (W) done by a reaction is equal to

Background: Energy changes occur in all chemical reactions; energy is either absorbed or released. If energy is released in the form of heat, the reaction is called exothermic.