Chemical Reaction Lab Report

The main objective of this experiment is to differentiate between a physical change and a chemical change.

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?

One type of chemical reaction, called combustion, involves the burning of various compounds and elements. Some substances are more

The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter.

Reactants collide with each other so new bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make new products

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.

A chemical change is a change that alters the identity of a substance. A chemical change can be identified by five things: change in mass, formation of a precipitate, release of heat and/or light, color change, or giving off gas.

The general thought of mixing vinegar and baking soda together to create a chemical reaction has been practiced many times over in science classes around the world. At times, the reaction was used to propel a small rudimentary rocket, or as in the case of this experiment to blow up a balloon. The anticipated end result of this experiment was always intriguing to the youngster that watched in wonder. When the baking

Chemical reactions make new things by rearranging other things. In a chemical reaction, the main change that occurs relates to the way atoms are bonded to each other, in order to change those connections, bonds must be broken and new bonds be formed.

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.

A chemical reaction is a process in which elements or compounds react with one another to create new or different substances. There are two parts to a reaction. Those two parts are the products and the reactants. The reactants are the chemicals or chemical compounds that are going through the reaction itself. The products are chemical elements or chemical compounds that are produced as a result of the reactant or reactants reacting. There are four key indications that there’s a chemical reaction is taking place. Those four signs include a change in color and/or odor, formation of a precipitate or a gas, the release or absorption of energy (light, heat, electricity), and if the reaction is irreversible. Along with this information, there are ways to predict the products of a reaction.

In this lab, a 95.43% yield resulted from the chemical reaction between a base and an acid. Sodium bicarbonate, a base, and sodium chloride, an acid, are a 1:1 mole proportion. The balancing coefficients in the reaction indicate that there is a 1:1 mole ratio between reactant sodium bicarbonate and product sodium chloride. This means that for every 1 mole of sodium bicarbonate that reacts, 1 mole of sodium chloride should be produced. A chemical reaction occurred when hydrochloric acid was added to sodium bicarbonate because there was a formation of bubbles.

The purpose of this project is to test if smaller reactants create a faster chemical change. This test also will show if hot or cold water affect the time of the chemical reaction. The experiment will show if reactants are broken down into smaller particles can the chemical reactions speed up, the increase of CO2 at ten second intervals. This will be done using an experiment with Alka-seltzer tablets, varying their physical composition and timing the release of CO2 over ten second intervals.

The claim of this investigation was that iron (III) sulfate were the resulted product from the chemical reaction based on our experiment. The hypotheses were whether the chemical reaction would result in 1.72 grams of Cu or 2.57 grams of Cu. The first trial resulted with 2.638 grams of Cu, and the second trial resulted with 2.111 grams of Cu. Because of the two different masses of the product from the two trials, we averaged both of them and got 2.375 grams of Cu. From the experiment, there was 2.375 grams of Cu, it was closer to the hypotheses with 2.57 grams of Cu.

These characteristics or signals that a chemical change or reaction has occurred include change of color, change of temperature, or change of substance. A reactant is the substance that exists before the chemical reaction takes place. A product is the substance that is the result of the chemical change. For example in the chemical reaction that occurs when a newspaper is burned the newspaper is the reactant because no chemical change has occurred yet and the newspaper is still the same. The ash that is created is the product because the newspaper is now ash not newspaper.