In chemistry it is important to understand the difference between physical and chemical changes. The objective of this experiment was to perform tests using heat or chemical mediators and observe the results for any physical or chemical changes. Various materials were heated or mixed, monitored and results recorded. Numerous chemical and physical changes were noted during the procedure. It was possible to distinguish between physical and chemical changes using scientific observations.…
A 125 mL flask was obtained. The square of aluminum was fashioned over the flask by laying the foil over the mouth and folding the sides down. A pin was then obtained and was used to poke a tiny hole in the center of the aluminum cap.…
The objective of the experiment was to determine the density of a metal along with the density of distilled water. In an attempt to help the experimenters more thoroughly understand the relationship between concentration and density.…
Procedure: Using a 96 well plate and a pipette each chemical was placed into its individual well, two drops of a second chemical were added and the observations of the reaction/changes were recorded. The new mixture was viewed on a light and on a dark background to observe all changes.…
The experiment was very helpful in learning how the chemicals do react with each other. Some chemicals change colors, some chemicals remain the same color, but bubble or precipitate, while others might no have any apparent physical change at all. All chemicals react differently to each other in different situations, lighting, temperatures and surroundings. Learning about these different chemicals was very intriguing to me and a fun experiment to do as…
Procedure: In this experiment I used a 96-well plate to hold each of the chemical reactions that occurred during this lab. Using a pipet, I added two drops of one chemical with two drops of another chemical and observed the effects of each reaction.…
Purpose or Objectives: Observe several changes in matter and write questions concerning the properties of the samples.…
This experiment involved placing drops of specified chemicals into a well on a 96well plate. Each well…
The purpose of this experiment was used to identify the chemical changes a substance undergoes by knowing some of its chemical properties like (Change in color, producing bubbles and gas, precipitation, conductivity). The aim of today’s lab was to help us identify different households and their components, they contained whether they were acid/ base, because most of the households are based on those solutions like (i.e. Acetic acid = Vinegar = CH3COOH can be used in cooking) or bases solutions like (bleach is applied for cleaning and also to remove dirt’s). And to identify those substances we can do testify them by observing the change in litmus paper (i.e. acids when the dissolve in the solution they produces Hydronium ions H3O+…
Objectives: 1. To examine a variety of reactions including precipitation, acid-base, gas forming, and oxidation-reduction reactions. 2. To identify the products formed in these reactions and summarize the chemical changes in terms of balanced chemical equations and net ionic equations. 3. To identify the species being oxidized and reduced in oxidation-reduction reactions and determine which species is the oxidizing agent and the reducing agent. Chemical equations represent what occurs in a chemical reaction. For example, the equation HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) describes an acid-base reaction, a type of exchange reaction in which the driving force is the formation of water. In an exchange reaction, the…
The procedure of this experiment was to carefully mix different chemicals together using the chemical filled pipettes and the 96-well plate and determining what chemical reactions occurred.…
In this experiment, the student studied the composition of materials in a setting where the indications of chemical changes were safely observed. The changes observed consisted of bubble formation, colors, viscosity, and precipitate formation.…
4. I will use goggles and cloves all the time, I also need to point dangerous materials away from other people and I should be specially cautious with hydrochloric acid.…
A. Observing and classifying types of changes of matter A.1 Ice Observations: ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Type of Change: ________________________________________________________________ A.2 Milk and Vinegar Observations: ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Type of Change: ________________________________________________________________ A.3 Magnesium and Oxygen i. Initial appearance of…
.2400 grams of the unknown compound. This is done in duplicate and purple-tinted precipitates are placed in Gooch crucibles. The precipitates are suction dried using ethyl alcohol then acetone to…