Science

Conclusion The purpose of this experiment was to determine whether substances underwent physical or chemic transfigures when added to other chemics. In ein truth action came a reaction. Chemicals were pickings charge of the reactants. This research laboratory focused to a greater extent on both(prenominal) quantitave and qualitative measurements. The substances we observed in this lab were copper, magnesium, sodium chloride, sugar, yard chlorate, single, and iron. We observed the substances appearance before and aft(prenominal) they were composite. We looked for precise indications of chemical changes, color change, formation of a precipitate, and smoke. If one or more of these occurred, a chemical change took place. If none of these occurred, thence no reaction occurred. Since no numbers were calculated in this experiment, precision and accuracy was not a big deal. The number one hardly a(prenominal) substances we experimented with had chemi cal changes. Which ment that each substance changed from its original property. hog underwent a reaction to form copper oxide. Sodium chloride before and after it was mixed was white. The sodium chloride did undergo a change because the crystals were small after being mixed.

The next substance was grand chlorate which was mixed and, bubbles formed, the crystals turned to a liquid, smoke was formed, and then went gnarl to a solid by forming a precipitate. The smoke prone off and the precipitate that was formed both are endorse of a chemical change. Also it was an example of exothermic reaction. iodine is very toxic. Before the iodine was mixed i! t was dark silver, metallic, flake off like, solid. The iodine turned to a purple vaporisation immediately. This work out of spill from solid to gas state is called sublimation. After the vapor went back to the solid state, it was still dark silver, metallic, flake like, solid. In either mixture came a reaction that was observed with our accept eyes.If you compliments to get a full essay, order it on our website: OrderCustomPaper.com

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