Copper Sulfide Lab

The chemical equation of the formation of zinc hydroxide after zinc and iodine react: 2Zn+I2+2H2O2Zn(OH)2+I2

Stoichiometry is a branch of chemistry which involves the study of the amount of substances which are involved in a reaction. More specifically, stoichiometry is the use of the product reactant relationship in a chemical equation to acquire a desired quantitative outcome. This process can be used to measure a variety of components in a chemical reaction such as molar ratios, molecular weights, the number of products produced in a reaction, and the quantity of the reactants which will be used in a chemical reaction. In this experiment, stoichiometry was used in order to determine the amount of aluminum needed to produce between 0.1 and 0.2 grams of copper when given copper (II) chloride in excess. However, in order to determine the amount of aluminum needed to produce between 0.1 and 0.2 grams of copper, first one must analyze the reaction which occurs between the aluminum and copper (II) chloride.

Scientists figured out a way to name every element they discovered so they won't have any issues when combining elements to form any kind of compound because there an infinite amounts of chemical compounds. We need a systematic method for naming compounds because the scientists often use chemical formulas to describe any chemical compounds. An inorganic compound is a compound that is not organic and is synthetic from geological systems when inorganic compound is a compound that is found in any biological system. A ionic bond is a bond that is in a electrostatic force between opposite ions, covalent bonds are found in the sharing of electrons between pairs, and acid is a type of chemical that shares a proton and accepts a pair

Apparatus and Material: evaporating dish, Bunsen burner, wood splint, test tubes, micro spatula, dropper, mortar and pestle, test tube holder, safety goggles, lab apron.

Elemental copper underwent five chemical reactions before cycling back to elemental copper. Reaction 1 was an oxidation-reduction reaction. Elemental copper was mixed with concentrated nitric acid and the solution went through several color changes as the copper reacted with the nitrate ions. The nitrate ion oxidized the copper metal to a copper(II) ion and transformed to nitrogen dioxide in the process. This reaction was

Discuss the qualitative information that can be determined from chemical formulas and balanced chemical equations:

correct except for our prediction for zinc and iron sulphate. We predicted that zinc and iron sulphate would have a reaction and produce zinc sulphate and iron if it followed the Activity Series of Metals. From this, we can conclude that either the Activity Series of Metals is wrong or there were some errors that occurred during the process of the

Our group worked with copper and magnesium metals and aqueous solution of zinc sulfate. A small strip of copper was placed into a test tube containing colorless zinc sulfate solution. A small strip of copper about the same size was place into a test tube containing colorless zinc sulfate solution.

For their part, SO4- ions react with the Zn2 + cations and become zinc sulfate molecules.

This experiment involves the synthesis of compounds originating from pure solid copper. By applying solubility rules and the reactive properties of substances, many compounds which would otherwise be costly to extract from nature are able to be synthesized in the laboratory. Laboratory synthesized may sometimes be more economical than natural extraction, however it poses its own problems with the amount of substance that is actually yielded from the production reactions (Stathopulos, 2007). Almost no reaction has 100% yield, thus scientists inadvertently produce undesired products that must be filtered or decanted out of solution (Petrucci et al, 2007). Beginning with pure copper

Changes can be chemical or physical in nature. If a chemical change is taking place we will be breaking bonds and forming new bonds and therefore creating a new substance. In a Physical change we will have the same substance but simply in a new form. (Dickinson et al. 197). In order to collect evidence to prove a chemical change is occurring we need a change in the indicators. The more active a chemical is the more likely it will have a chemical reaction with another chemical. (Dickinson et al. 180) The higher the element is on the Activity Series the more reactive it is. (Dickinson et al. 192) A reactive element will replace an element that is underneath it in the activity series. (Dickinson et al. 192) In this lab we will examine chemical reactions with the activity series, indicators and the type of chemical reaction it is. The purpose of this lab is to study chemical change and analyze why and how chemical reactions are created. In this lab we are going to combine certain chemicals with each other to create a chemical change and we will observe and record any changes. The chemical reactions listed in the Results had all gone through chemical change and all the indicators have been recorded. Chemical change is very important and we need to learn more about them because without chemical change we couldn’t perform daily tasks.

Chemical reactions are the heart of chemistry. People have always known that they exist. 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. As you might imagine, it's useful to be able to measure the acidity of solutions. Scientists have come up with the pH scale for determining the concentration of acid in a solution so we can distinguish between solutions with varying acidity.

Chemistry is a branch of science commonly defined as “the study of the structure, properties, and reactions of the chemical elements and the compounds they form” (The American Heritage Science Dictionary, 2002). This definition is very general and covers a range of study areas, including those that are an asset to society. Chemical reactions are studied by many chemists as they common occurrences in everyday life (Stewart, 2014). Without chemical reactions people would be unable to perform simple tasks that are essential for quality of life and even life itself, such as cooking, lighting a match and breathing (Helmenstine, 2015). A chemical reaction occurs when a chemical change takes place, producing new substances. However, all chemical reactions are different and vary greatly in the time it takes for them to occur (Chem4kids.com, 2015).

A chemical reaction is the process of rearranging the atoms in reactants to create new and unique substances known as products (3). Substances are either a chemical element or compound, which cannot be broken down into simpler substances by normal chemical procedure (3). Reactants are substances that undergo specific changes in the process of a reaction while products are the final product of the reactants when the chemical reaction is completed. In a chemical reaction the least amount of energy needed is known as activation energy. Activation energy is the amount of energy required for a chemical reaction to undergo its operation (6). In mathematical expressions or equations the letter E is depicted as activation energy

Some people may ask what exactly is a chemical reaction? A chemical reaction is a process that involves rearrangement of the molecular or ionic structure of a substance. There is six types of chemical reactions named Synthesis, Decomposition, Single Replacement, Double Replacement, Combustion, and Acid base reactions.