Exp. Observation of Chemical Changes Essay

You know what color phenolphthalein and BTB turn when testing an acid or a base. Use three household cleaning products with BTB. Name the items tested and their results:

The color of the solution was turning slightly into yellow and the color of the iron strip into white.

Heavy precipitate emerged immediately and solution turned white in color; solution then became opaque and turned light, bright blue in color.

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.

Blue #1: Blue number one can be known as Brilliant Blue FCF can be traced to pesticide formulations applied to growing crops or

The point of the experiment was to determine whether the chemical mixture will form a precipitate. The first step was to combine compound 1 and compound 2. After mixing them together, if a solid was created, a precipitate formed. Also for many of the chemical mixtures, the color changed. Silver Nitrate + Sodium Chloride created a precipitate.

The color is a light blueish greenish color like turquoise, as the water evaporates the mixture gradually turns a brighter and darker green

The litmus paper turned a very light purple only changing the color of the paper slightly. Using the pH scale I would place the pH of the tap water at 9. After testing regular water I then took some soil from my flower bed and mixed it in a glass of water. Once, all the soil settled to the bottle of the glass I dipped my litmus paper into the water. The paper turned dark purple. Using the pH scale I think the pH of the mixture is

1. In the first reaction, when acetylene gas was produced, another product produced in the reaction remained in the dissolved in the water: Ca(OH)2, also known as calcium hydroxide. Before lab was finished, the last step was to measure the pH of the previously neutral water in which the acetylene gas was used to be produced. This time, the red litmus paper turned blue and the blue litmus paper remained blue, signifying that the water was basic. The reason for this is because of the second product, calcium hydroxide. Calcium hydroxide made the water basic because of its hydroxide ions: when it dissolved in water, the calcium hydroxide went through a dissociation reaction, isolating the hydroxide ions in the water, thus making the water basic.

Experiment 1-2. Bromine: The potassium bromide solution was originally transparent in color, and the nitric acid was slightly yellow. After reacting with cyclohexane and nitric acid, the solution turned reddish brown, with the top part staying slightly yellow.

From 1975 to 1997, Rohypnol was a plain white tablet. When it was mixed into drinks, it was tasteless, colorless, and odorless. In 1997, manufacturing companies in response to claim of sexual assaults remanufactured the pill to an oblong olive-green tablet with a speckled blue core. Now when the tablet is dissolved it will turn light-colored drinks blue.

Objective: We will be using various combinations of distilled water, hydrogen peroxide, malonic acid, ascorbic acid (Vitamin C), acetic acid (Vinegar), starch solution, laundry detergent, iodine tincture, manganese sulfate, and sulfamic acid to produce multiple pairs of solutions labeled Solution A and Solution B. The goal is to either observe the process of fluorescence or the absence of fluorescence. Fluorescence is the chemical property of generating light after undergoing the process of absorbing and emitting a certain amount of energy, directly causing a physical change in the substance's color. Mixing Solution A and Solution B, while viewing the results under UV light from time to time, should result in the new solution constantly

This lab deals with the chromatography of support hues which suggests you understand what kind of blends are used as a piece of a thing like sustenance contrasting so as with shade et cetera the result to FD&C Nourishment Colors. You use six different food hues, four sustenance tones out of the store, two particular Kool –aid powder and four exceptional shades of sweet like M&Ms you use for the chromatograph. At the end you endeavor to find which sustenance hues are in substitute things. Test and Perception

New blue's recipe is yttrium(y), indium(In), manganese (Mn), and oxygen (o). These make the compound of YInMn, which has been proven to be more durable then cobalt blue. It's also proven that the ingredients and pigment Is nontoxic. YInMn blue even absorbs high-energy UV light with out breaking down. YInMn blue also reflects inferred

e. Blue - Violet - This can be made when trying to create the secondary colors by adding more blue to red, instead of having equal parts of red and blue it would be two parts blue and one part red.