Chemical Reaction Lab

6-3: This process is used by cells to manufacture _biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products__

Temperature controls the speed the enzymes work at. Higher temperatures increase the kinetic energy which increases the chance of collision therefore speeding up the rate of

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?

Introduction: Chemical reactions are dependent upon two factors: temperature and concentrations of substance. We can monitor the rate at which a chemical decomposes or the rate at which a chemical substance appears. In this experiment we will be measuring the rate of decomposition of hydrogen dioxide with the following reaction:

| Can see particles of both. When mixed with water salt dissolves and sand is left.After filter sand is left and salt-water goes through.After evaporations of salt-water, salt is only left in dish.

Day 1. Michael was coming home for vacation from college. When he got home he found out that

1. Place a small amount of wax from a birthday candle into a test tube. Heat gently over a burner flame until the wax melts completely; then allow

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.

Purpose: The purpose of this experiment was to observe the many physical and chemical properties of copper as it undergoes a series of chemical reactions. Throughout this process, one would also need to acknowledge that even though the law of conservation of matter/mass suggests that one should expect to recover the same amount of copper as one started with, inevitable sources of error alter the results and produce different outcomes. The possible sources of error that led to a gain or loss in copper are demonstrated in the calculation of percent yield (percent yield= (actual yield/theoretical yield) x 100.

The Relationship between Reactants and Products Results and Discussion The starting material of the Calcium chloride (CaCl2) was varied with each of the five Erlenmeyer flasks, while the Sodium carbonate (Na2CO3) remained unchanged through the reaction according to the Lab Manual.1The reaction of Calcium chloride and Sodium carbonate in each of the Erlenmeyer flasks that occurred resulted in a cloudy blue and white mixture. Once the mixture was added into the suction filtration system created, a powder like solid formed on the filter paper that was a part of the Buchner funnel. Tufts University School of Medicine did an experiment with a Buchner funnel and agreeably finds the funnel satisfactory.2 In this way, the suction filtration is being

Introduction: The objective of the mixed substances lab was to see how properties of individual substances compare with properties of mixed substances. A mixture is a combination of two or more substances that are mixed together physically. A homogeneous mixture is uniform in structure or composition throughout the substances. A heterogeneous mixture consists of three dissimilar parts of elements.

The Observing Chemical Reactions lab called for us to determine from a list of possible chemical formulas which chemical reaction is the most green to run. From here we concluded from a list of chemical reactions as to which chemicals are the least hazardous to people and the environment. After choosing which experiments to work on as a group we then conducted the experiments individually. The reactions that we decided to pursue were A1, B2, C1, D1, E1 and F2. After concluding which reactions should be tested we came together once more to discuss a central research question.

Reaction rate can be affected by pH, temperature, and concentration of enzyme and substrate (Biology Department, 2014). If pH levels are not in the enzyme normal range the active site of the enzymes will change its shape so the enzyme will not be able to combine with the substrates, which will prohibit the converting of the substrate to product (Reece et al., 2014). Temperature effect the molecules movement for enzyme and substrate in the solution so if the temperature increase the molecules movement will increase and this will increase the rate of reaction until the point that the energy became so high this will prohibit substrate from binding due to the fact that the active site of the enzyme were altered (Biology Department, 2014). If enzymes concentration increase the amount of product per unit time will increase too, while the total amount of product will not change (Richard & Mark, 2001).

We predicted that as the temperature increased the rate of a chemical reaction would also increase. Increasing the temperature of enzymes and substrates increases the reaction rate given that the molecules gain more kinetic energy that aid in speeding up the movement of molecules and thus more collisions in a given time mean a faster reaction. Quite a small temperature rise can produce a large increase in rate. We predicted that the hottest solution of Peroxidase, which was at 99°c, would generate a faster rate of a reaction first. However, as seen in the tables and the graph below, there are fluctuations between the readings. The temperatures range over which enzymes show activity would be limited between the melting point (0oC) and boiling

reaction rate increases. If the temperature of an enzyme gets to high the reaction rate will slow