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When copper sulfate dissolves in water, there are positively charged copper atoms floating around. The iron atoms can give the copper a little negative charge in the form of electrons. The neutral copper atoms no longer dissolve in the water so it creates a cloud of copper in the solution.

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The oxidizing solution, water and 3% hydrogen peroxide, is mixed with the Cu+2 ion catalyst and then the blue light is produced because of this reaction with luminol. The luminol is oxidized by the hydrogen peroxide in a basic solution to an excited state. The excited state of the luminol than changes back to the stable state with the emission of light.

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When grass is cut, enzymes break down fats, that form linolenic and linoleic acids.These can be broken down by another enzyme into smaller pieces, the majority of which have 6 or 12 carbon atoms. Grass also releases (E)-2-hexenal, also known as leaf aldehyde.

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Aroma chemistry infographics- Learn Chemistry

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A collection of visually stimulating and informative infographics about the chemistry of smells, which would make a valuable addition to any science classroom.

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Sugars react with amino acids in the bacon and that is called the maillard reaction. That combined with melting fats produce aroma compounds. Hydrocarbons are Hydrogen and Carbon atoms attached in thousands of ways and aldehydes are Hydrogen, Oxygen, and Carbon atoms. Aldehydes and nitrogen containing pyradines along with other aroma compounds make the meaty aroma.

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The potassium permanganate, which is purple, is reduced into the manganate ion and adds a green color to the mix. The manganate, which is green, is changed again to manganese dioxide. The manganese dioxide is made of brown solids but they are so tiny that the liquid looks yellow.

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Starch is a mixture of Amylose and Amylopectin which are different types of glucose and starch. Amylose and starch produce a deep blue-black color. Iodide mixed with water results in a linear tri-iodine ion(I3-) complex in iodine. The deep blue-black color is produced because the iodine slips into the coils of the starch.

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Iodine and Starch Experiment | Iodine Experiment | Starch Experiment | Science experiments for kids

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The baking soda and citric acid has an endothermic reaction that makes the product cold. They create carbon dioxide gas.
C6H8O7 + 3 NaHCO3 - Na3C6H5O7 + 3 H2O + 3 CO2

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This is a simple reaction involving 50/50 mix citric acid and baking soda...which forms CO2 gas and trisodium citrate!

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The mercury reacts with the aluminum to create an amalgam(a mercury alloy) which disrupts the process of oxidation and allows fresh aluminum to react with the air forming white aluminum oxide.

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What Happens When You Add Mercury to Aluminum?

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The hydrogen peroxide reacted with the enzyme catalase in the blood and converted hydrogen peroxide into water and oxygen. The foam consists of bubbles filled with the separated oxygen molecules.

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Blood vs Hydrogen Peroxide - Chemical Reaction

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When the mentos hit the soda, a chemical reaction happens which creates gas that makes the soda shoot up out of the bottle. The soda already has carbon dioxide(CO2)

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The yeast acted as the catalyst and it sped up the reaction that caused an oxygen atom to leave the hydrogen peroxide(H2O2). After the reaction, there was steam and the bottle heated up meaning it was an exothermic reaction.

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Funny Elephant Toothpaste (Chemical Reaction)

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It creates a yellow precipitate as soon as they touch. A double-replacement reaction happens because the positive and negative ions of the reactants switch places

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Reaction Lead Nitrate + Potassium Iodide