Chemical Reaction Lab Report

The experiment is to observe a variety of chemical reactions and to identify patterns in

Purpose: The purpose of this experiment is to observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products.

The purpose of the lab is to study the effect of a chemical reaction, on the change in mass.

Purpose: Investigate a chemical reaction using lab procedures and observations. Then, find a pattern of reactivity and explain the findings using a chemical equation and particle diagram.

To understand this lab there is knowledge prior to the lab that was taught. A physical change is a change affecting the form of a chemical substance but not its chemical composition. Physical changes can be used to separate mixtures into their component compounds. An example of a physical change is a popsicle freezing in the freezer. A chemical change is any change that results in a new formation of chemical substances. An example of a chemical change is when rust forms on nail. The signs to look for to see if there is a chemical change are color change, odor change, production of bubbles and gas, production of heat and light, and production of a precipitate. If any of these signs happen in the lab it is a chemical change. The question for

A white sheet of paper was then obtained and marked on. Six “X”’s were drawn directly under each well of the reaction plate. This was used to verify the reaction had fully occurred in the plate. A label was also placed above each “X” in order to identify specific wells. The paper was designed similar to figure 1.

A + B → AB AB → A + B A + BC → AC + B AB + CD → AD + CB X + O2 → CO2 + H2O Experimental Two experiments were completed to demonstrate combination reactions. In the first experiment, a small piece of copper wire was heated in the flame of a bunsen burner until the copper wire’s appearance was changed.2 A similar experiment was conducted with a strip of magnesium ribbon. The ribbon was heated in the flame of a bunsen burner until the ribbon started to spark.2 The ribbon was then placed in a watchglass where water was added and it was tested to be acidic or basic.2 Two experiments were also completed to demonstrate single replacement reactions. First, a small piece of copper wire was placed in a test tube, then AgNO3 was added to cover the copper

The purpose of the lab “Chemical or Physical Change” is to analyze changes of matter and determine whether a physical or chemical change took place based on the observations and evidence acquired from the six experiments. Based on previous knowledge, a physical change is a change in a substance appearance that does not involve a change in the identity of the substance. This type of change in matter only changes the physical properties of the substance which are the properties that can be observed and measured without changing the materials composition. Examples include ripping, cutting, cracking, splitting, and changes in states of matter such as melting or freezing. This type of change in matter can usually be undone. A chemical

Throughout the world, chemical reactions are taking place to either achieve a specific purpose or prevent a specific outcome. These reactions can be as simple as boiling water to pour a coffee in the morning or as complex as industrial level biochemistry. Whether you are aware of it or not, you create numerous amounts of chemical reactions every day. According to the collision theory, a chemical reaction will occur if two or more molecules collide with the right amount of energy and the right orientation. The energy that is required from the collision depends on the molecules and can be referred to as activation energy.

The purpose of this lab was to distinguish observation from interpretation during a chemical reaction. In the lab, copper (II) chloride dihydrate, CuCl2 was added to water to make a solution and aluminum foil was then also added after. CuCl2 crystals were the color turquoise and when added to water turn green. After stirring, they all dissolved to make a teal solution. When the aluminum foil was added, the temperature of the solution went from 24.9 C to 94.2 C. The solution also started to bubble and foil started corroding before falling off to the bottom then most of the foil dissolved which made the water a brownish red color.

The purpose of this lab, is to determine and list the elements by their ability to engage in chemical reactions, which is known as an activity series. The elements ability to gain or lose valence electrons, determines their ability to partake in chemical reactions. In the activity series, the elements are listed going from the most reactive elements to the least reactive elements. The more reactive element out of the two, is confirmed by combining a pure element such as solid zinc, with a solution that has a different element’s ions in the water solution, like lead ions. To conclude whether the solid metal is more active than the metal in the solution, you’d observe a chemical reaction when the solid metal (zinc), and the metal in the solution

The purpose of this experiment is to determine why the distance between beaker A and beaker B increase or decrease the amount of visible vapor. An acid-base neutralization reaction is a chemical reaction between an acid and a base. Evidence of a chemical reaction is that a gas is formed. I noticed that a thicker, denser gas was formed when beaker A and B were right next to each other as opposed to when they were about a meter apart. If an acid-base neutralization reaction is related to vapor, then as the distance between beakers A and B decrease, the amount of vapor will increase due to a reaction between beaker A and B’s gases.

Abstract: In this lab report two unknown substances will be tested. The tests performed were looking for the presence of the main biomolecules, Carbohydrates, Lipids, and Proteins. The tests used will be used in the Lab report are; The Benedicts test to test for sugars, the Iodine test for coiled or non-coiled carbs, The Grease-spot test for lipids, and the Biuret test for proteins. Tests show that both substances had different responses to the Benedicts test. Both substances shared the same response to the Iodine test. In the Grease-spot test both showed the same. In the Biuret test the unknown substances resulted differently from each other.

During this experiment we tested the amount of change in heat given off during different chemical reactions. We created a calorimeter that we will use to test different reactions to see how the heat energy was affected. After completing the experiments we were able to tell what chemicals or metals would change the heat energy for every reaction we tested. Overall, this experiment showed us what characteristics of chemical reactions affect the change in temperature, enthalpy, and specific heat.

    Quality control is an important aspect of science and impacts life for average Americans daily. Just about every manufacturing facility used quality control, including medicine, food, and cosmetics. Quality control is used to determine if a product, like food contain what they say they do. For example, a company claiming to make healthy food may understate the amount of high fructose corn syrup (sugar), but if quality control happens then the contents will be revealed accurately.