Chemical Reactions Lab

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

The Purpose of this experiment is to make the observation about a Chemical system and record exactly what was seen, paying attention to details. Then to design other experiments that will allow determination of which substances that are responsible for each of either the change in temperature, production of a precipitate , production of gas, distinct odor, and color change. Pre-Lab questions : There are 4 chemicals involved in this reaction. Name Them.

Procedure: In this experiment, various chemicals were mixed together, to determine a reaction. Using two drops from chemical 1 and two drops of chemical two, unless otherwise stated, then recording the type of physical reaction or color changes that occurred.

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?

In this experiment you will observe some physical and some chemical changes. You will observe that energy must be used to start some chemical reactions, and that it is produced in others.

Purpose: The purpose of this lab activity is to help understand observation and interpretation and to distinguish one from another all while analyzing the chemical reaction. You will see what happens when you put a beaker with water in it and then put dry copper and after that put aluminum foil in and see the observations and interpretation in the chemical reaction.

The objective of the experiment was to observe different reactions with different chemicals. The experiments emphasized on the chemical changes occurring in acids and bases as well as color changes and bubble formations. The experiments allowed for a better understanding of the undergoing chemical changes in mixtures. Some mixtures instantly changed colors while others were transparent or foggy. Some mixtures produced thick color that created solids called precipitates. Mixtures KI + Pb(NO3)2 and NaOH + AgNO3 both produce noticeable precipitates after a while. It was interesting to see the different acidic and base reactions like the fuchsia color formation in NaOH + phenolphthalein.

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.

To perform the experiment, you need 2 ml of water, then contain 15 ml of 3m HCL, 6m HNO3, 6M NaOH, then 15 ml of unknown solution each one labeled on a test tube. A flame test will be conducted to determine ions. You will need a spot plate, Bunsen burner, flame-test wire, dropper bottles of 0.1 M NaCl, 0.1 M KCL, 0.1 M CaCl2. Obtain a spot plate. Place 5 to 8 drops of 0.1 M solutions of each of the following solutions into separate indentations: KCL, CaCl2, NaCl, unknown solution. To clean the flame-test wire dip the loop at the end

We had to describe the reactants and products and what is taking place during the reaction. Procedures We had to follow seven separate instructions for each of the separate reactions. 1. We had to obtain a small piece of Magnesium. Holding it with forceps, we placed it in the flame of a lit Bunsen burner until there was no more reaction in the Mg.

In Reaction C, adecomposition reaction proceeded for the reasons that when heat was added to copper (II)hydroxide, it decomposes to form two compounds, copper (II) oxide and water. Reaction D,a double displacement reaction took place since copper (II) oxide, reacted with sulphuricacid to produce two new compounds: copper (II) sulphate, and water. The copper andhydrogen gas replaced each other. In both parts of Reaction E a single displacement reactionoccurred. When zinc was placed in copper (II), it formed a new compound with sulphateleaving copper by itself as a metal.

Experimental approach: In the first reaction, copper metal turnings oxidize when put in contact with nitric acid and become copper nitrate.

The author describes reactions

This section of the experiment was composed of a series of different chemical reactions. In the first reaction, a small piece of zinc is placed is in a test tube that contains 2 mL of 6 M HCl; observations were then recorded. The next reaction, which should take place under a hood, requires a 1-inch copper wire to be placed in a clean test. Concentrated nitric acid is then added and observations are recorded. In the third reaction, 1 mL of 0.1 M sodium oxalate, Na2C2O4, is placed in a clean test tube.

The purpose of this lab was to find that what chemical change has taken place, identify the type of reaction based on the reactants and products of a reaction, and describe reactions by writing word equations and balanced chemical equations.