Double Displacement Reaction Lab Report

Acids react with reactive metals in order to make a salt. Salts are a compound formed by the neutralisation of an acid by a base, for example metal oxide. This is a result of hydrogen atoms in an acid being replaced by positive ions.

D. The water and oil acted differently on the reaction surface. Propose a hypothesis that explains the different behavior of

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 this experiment is to study ionic reactions, to be able to write balanced equations, and to be able to write net ionic equations for precipitation reactions.

The products of this reaction are elemental oxygen, elemental nitrogen, water, and carbon dioxide. The Gibbs free energy for this reaction is negative at 273 K. Determine whether the reaction is spontaneous. Answer: Because the Gibbs free energy of this reaction is negative, this is a spontaneous reaction. In addition, it is an exothermic reaction and gives off energy (explosion) and the reaction products are the result of the break down of Nitroglycerine, in other words, the entropy of the

Neither matter nor energy is created or destroyed in a chemical reaction only changed. This experiment is a decomposition reaction a more complex substance breaks down into its more simple parts. One reactant yields 2 or more products.

A salt and water are formed i all neutralization reactions. Discussion Questions Mg(OH)2 is a strong base, while HCl is a strong acid. Mg(OH)2 interacts with the HCl present in the stomach. When enough Mg(OH)2 is present, the acidity in the stomach neutralizes since acids and bases are complete opposites.

This reaction that took place in cycle two was a double displacement reaction also. In cycle three the heat caused the reaction to turn black as some dark blue substance was evaporating creating smoke. In this cycle, four, copper hydroxide forms to copper oxide and water due to the heating this reaction being a decomposition reaction type. In cycle four, after the excess liquid of the reaction was disposed into its appropriate waste container and 2.5mL of sulfuric acid drowse solution were added the reaction turned back to light blue. This reaction ends with the binding of copper oxide and hydrogen to copper and water this being double displacement.

Single displacement reactions are reactions where one reactant replaces part of the other (Helmenstine, Thought Co, 2014). The elements with higher reactivity replaces the elements with lower activity, an example of this is the statue of liberty that is made from iron and coated with copper, the copper started reacting with air and a bluish green coating is formed. This coating reacts with the iron inside and a single replacement occurs and the outside copper is replaced back (Vista, 2017).

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?

A single displacement reaction occurs when an element replaces another element in a compound. A metal only replaces a metal, and a nonmetal only replaces a nonmetal. Only a more reactive element can replace the other element in the compound it reacts with. We need to refer to the activity series to determine the reactivity of metals and

Do you ever wonder what happens during a chemical reaction? Well, scientist have figured it out. During a chemical reaction atoms rearrange and bonds in different ways. Document three talks about how atoms rearrange to forms new substances in a chemical reaction. The example they used was table salt. Table salt is made of sodium and chlorine. Sodium and chlorine are both harmful substances to humans but, when a chemical reaction happens the sodium and chlorine forms a substance that we put in most of our meals.

A chemical reaction is a chemical change which forms new substances, such as compounds. Common chemical reactions include a candle burning, a nail rusting. *Physical changes reposition molecules but do not affect their internal structures. Physical changes you may already know of are, scrambling eggs, boiling water and even slicing an apple. Where as a chemical changes result in the creation of different chemical substances at the molecular level.

Chemical reactions that release energy are called exothermic reactions, these reactions are observed by an increase in temperature of the reaction mixture.

Decomposition reactions are reactions in which a substance breaks into smaller parts. As an example, ammonium carbonate will decompose into ammonia, carbon dioxide, and water. Polymerization reactions are reactions in which simpler substances combine to form a complex substance. The thing that makes this reaction unusual is that the final product is composed of hundreds of the simpler reagent (a substance that contributes to a chemical reaction) species. One example is the polymerization of terephthalic acid with ethylene glycol to form the polymer called Dacron, a fibre, or Mylar, in sheet form: