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Chemical reactions 8th grade
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Recommended: Chemical reactions 8th grade
We’ve all been told once or twice in our lives to stop playing with our food; here’s our one free chance! When milk, which contains multiple different molecules like fats, sugars, proteins, minerals and vitamins, is combined with detergent, or any other form of liquid soap, tends to give you an especially dramatic reaction. In the experiment, you’ll need 2% or whole milk, food coloring of no specific color, dishwashing liquid, cotton swabs, and a plate. The food coloring is only to add color and to show actual reaction; otherwise it wouldn’t be visible to the naked eye. A simple step by step process will allow you to perform a swirling color wheel of milk every time. I got the idea of this experiment when searching through YouTube for cool chemical reactions. I came across a few other things that seemed pretty cool, but this one especially caught my eye. I had never seen anything quite like it before and I wanted to try it for myself first. When I tried and realized how simple, but cool, it was I decided to set it up to present for my project. It’s very intriguing and everyone will ...
Experiment #1: The purpose of this experiment is to investigate the effects of baking soda and light intensity on the rate of photosynthesis of green spinach leave through the observation of floating disk.
First, fill your clear jar with water, preferably cool. Use your small bowl and add oil. Next, add your four colors to your bowl of oil. Mix thoroughly with your fork. The liquids need to make a deep red color, or close to red. Make the colors and oil are settled. Once everything is mixed, carefully pour the contents of the bowl into the jar of water. It make take a few seconds, but the colored oil with float to the top. Give it a little more time; this shouldn’t take a while. If you pay attention, the oil will start to slowly drip from the rim to the bottom of the jar, just like blood.
...nerally a more healthy people. Milk has many hazards that are veiled from the public and pose many grave risks to a consumers health.
The objective of this experiment will be to combine various substances, liquids and metals, and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical.
The blue bottle experiment is a chemical reaction in which a bottle with a water solution containing glucose, NaOH, methylene blue and air turns from a colorless substance to a dark blue substance after shaking. In this reaction, glucose is oxidized by dioxygen and forms C6H12O7 (gluconic acid):CH2OH–CHOH–CHOH–CHOH–CHOH–CHO + 1/2 O2 --> CH2OH–CHOH–CHOH–CHOH–CHOH–COOH. The solution loses color again after a short period of time. This color change can be repeated as many times as the bottle is shaken. First step is when the alkenols of glucose is formed. During the second step the redox reaction o...
For this experiment we have to use physical methods to separate the reaction mixture from the liquid. The physical methods that were used are filtration and evaporation. Filtration is the separation of a solid from a liquid by passing the liquid through a porous material, such as filter paper. Evaporation is when you place the residue and the damp filter paper into a drying oven to draw moisture from it by heating it and leaving only the dry solid portion behind (Lab Guide pg. 33.).
The project I am interested in doing is to make a color magnitude diagram of a star cluster, which will result in a graph similar to an HR diagram. The open star cluster I have chosen is NGC 457, or the Owl Cluster. I chose this one because it is easily observable with right ascension of 01h 19m 32.6s and Declination +58° 17′ 27″. NGC 457 is roughly above the air mass of 1.5 between the hours of 2100 to 0600 towards the end of October. The open cluster is in the constellation Cassiopeia, and is fairly bright without having a high density of stars. This ensures I will be able to observe it with ease, and there will not be too many stars which could potentially cloud my data. I will be plotting the color magnitude along the x-axis and the apparent magnitude of the stars within the cluster.
The experiment apparatus consisted of an extra-large egg, 1/10 spoon of salt, olive oil, water, a spoon, a small sized bowl, a Continental Electric egg beater, an 8” flat frying pan, a cooking stove, and a kitchen stopwatch.
Have you ever wondered how to separate the wonderful colors from the candy itself? What will the candy turn into when they separate it from the dyes? They wanted to see if they could find a more natural way to make the candy colorful, so that it wouldn’t cause so many health issues. They think that it will separate from the candy fine without any problems and that the Skittles will turn into a white-ish color and the M&M’s will be a chocolate color. The paragraphs in this essay consist of- what is the dye made of, how it can damage humans, and how to take away the dye from the candy.
...ia-ridden and harmful milk of times past. The history of milk is certainly not dull, and its future is sure to be equally as turbulent.
Wagner, C. L., Anderson, D. M., & Pittard III, W. B. (June 1996). Special properties of human milk. Clinical Pediatrics , p 283.
Egg Albumen Experiment The purpose of this investigation is to establish which is the lowest concentration of Copper (II) Sulphate solution that will denature a sample of egg albumen (egg white) at room temperature. The base of the reaction is the globular protein (albumen) being denatured by a heavy metal (Copper (II)), the copper (II) reacts with the NH3 group causing it to denature, this means the proteins' secondary and tertiary structures are being altered and refolding into different shapes, this resulting in a change from the substance being clear to turning opaque.[1] As the concentration of the denaturants increases more folding and changing of shape will occur and therefore more denaturing will occur and at a faster rate. From this I can predict that that lowest concentration of the solution is approximately at 0.03m solution.
Using the scissors, cut a 5cm piece of a straw and wrap two separate lines of copper wire around the piece of straw at both ends, make sure that there is at least 5cm remaining of the copper wire after it is wrapped around the straw (like in the image to the right)
The ingredients that will be included are: dish soap, 30% hydrogen peroxide, potassium iodide, and corn starch. Adding the cornstarch to the mixture has a chemical reaction to the hydrogen peroxide. It will have light and dark patches due to the uneven placement of the cornstarch; it will have an uneven reaction. Which will then make it appear “glowing”. The fourth experiment is very similar when it comes to the ingredients the only thing that changes is that we are no longer using potassium iodide but we are using yeast instead. Also, since yeast is being used, we are adding in fluorescent dye to it so we can shine a UV (ultraviolet) light on it to see the reaction occurring. Using the dye under a light helps us observe the reaction between the dye and cornstarch. I had to replace the potassium iodide with yeast for a slow reaction and also so it is possible to use the dye. In both of these experiments the reaction is a massive production of foam. The hydrogen peroxide will be decomposed into water and by the oxygen by the iodide and/or the yeast. A substance called catalyst speeds up the
Walford, J (1984). Adverse reactions to food additives and colours. In: Developements in Food Colours—2. Elsevier Applied Science Publishers LTD, New York pp. 207-209.