Difference Between Endothtermic And Exothermic

The credentials are Mr. Kent’s Chemistry Page: Endothermic and Exothermic Process and Bozeman Science: Endothermic and Exothermic Reactions. The Bozeman Science: Endothermic and Exothermic Reaction was created in 25 September 2013, however, the other source doesn’t have a written date on the website. This source is reliable, because the author is a teacher has studied for many years and she had evidence to back up.

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)

Experiment 2 focused on finding the enthalpy of solution of magnesium chloride. Testing the enthalpy of solution started with measuring out 10 mL of deionized water in a graduated cylinder for three separate trials, each trial having a different mass of magnesium chloride. The water was then poured into a well of a Styrofoam calorimeter then the initial temperature of water was taken using a temperature probe and the LoggerPro programming. A measured amount of magnesium chloride was placed in the same well as the water in the calorimeter,

In this lab we performed four test. Using these test we discovered how the chemicals compounds Citric Acid, Calcium Chloride, Sucrose, Potassium Iodine, Phenyl Salicylate , and Sodium Chloride reacted to heat and many solutions. We also noticed that Phenyl salicylate was the least reactive out of all chemical compounds. Using the information discovered from the lab we were able to separate the chemical compounds into two groups. In group one were the chemical compounds Calcium chloride, Citric acid, Potassium iodide, Sodium chloride, and Sucrose these chemical compounds reacted to three of the four test. Group two was just Phenyl salicylate which reacted to only one of the four test. We also were able to state that group one was a covalent compound group and, group two was an ionic compound

Hypothesis: Reaction 3 will create the highest exothermic reaction in the test tube this is because the chemicals are highly flammable the means they are high in exothermic relations. If we use 4 grams of zinc powder the chemical retain with the copper sulphate solution will create the highest temperature We changed the

The amount of tablets did effect the temperature of the water. Our findings made our hypothesis incorrect. The temperature of the water did increase as the number of the tablets increased also. In this experiment, the finding were quite surprising, simply because I thought that the temperature of the water will decrease as the amount of the number of tablets increased. In the real world I feel like this information would be beneficial, because it shows the reaction of an acid plus a base mixed with water.

It’s predicted that when adding the chemical substance into the water, energy will be released or absorbed, this will be observed by a temperature change, therefore, there would be an exothermic or endothermic reaction.

A hot pack is an object that can produce heat in an instant using a chemical reaction. These hot packs have been used to treat injuries, reduce muscle pain and cramps, and simply provide warmth. The use of hot packs is not a new technique, but modern science has helped to increase the speed and dependability of hot packs over the years. This lab posed the challenge to create a hot pack that reacted Calcium Chloride (CaCl2) with 100 milliliters (mL) of water (H2O) to reach the specific temperature of 55o Celsius (C). CaCl2 produces heat when it reacts with H2O because when the CaCl2 is mixed with H2O, the CaCl2 is instantly broken apart into individual ions by the energy in the H2O. The ions then form attractions to the water and, in the form

The decomposition of potassium nitrate is the only endothermic reaction. Endothermic reaction is a type of reaction where they have a positive enthalpy due to the energy gain in the beginning of the reactions. At the end of the reaction we end up getting an enthalpy of 13.22 KJ/Mole and end up with 62% experimental error. The highest error that we encounter in this lab was on the neutralization process. The reaction between the acetic acid and the sodium hydroxide end up producing up to the 99%. Experimental error. it might seem very hard to believe; however, we did a wrong experiment on the neutralization section of the lab. We used the strong acid and base combination in this reaction on the first trail. We reacted sodium hydroxide and hydrochloric acid together and we record the data. The reaction between the magnesium oxide and hydrochloric acid produced the enthalpy of -79.55and 86.7 experimental error. one big thing that seems to be constantly seen on this lab is that most of the reaction that is used on this lab were all exothermic except the potassium nitrate which was

Endotherms are animal such as modern birds and mammals that keep their body temperature constant. The passage claim that the dinosaursre differ many ways from modern repitiles and there is now considerable evidence that dinosaures were in fact endotherms. But the the professor cast doubt with the passage.

This experiment was performed to determine the heat of neutralization between Hydrogen chloride (HCl) and Sodium hydroxide (NaOH). A temperature probe was used to measure the temperature of the reaction when the base (NaOH) was poured into the acid (HCl). The data was collected on logged on LoggerPro.

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

Purpose: To measure the heats of reaction for three related exothermic reactions and to verify Hess’s Law of Heat Summation.

Purpose: This lab taught procedures for determining heat of capacity of a calorimeter and measuring enthalpy of change for three reactions. It also enforced methods of analyzing data obtained through experimentation and calculating enthalpy. These procedures are used in the branch of thermodynamics known as thermochemistry which is the study of energy changes that accompany chemical reactions. Concepts from this lab can be used to determine the potential energy of a chemical reaction. Much of the energy people depend on comes from chemical reactions. For example, energy can be obtained by burning fuel, metabolizing of food or discharging a batter.