Science

Conclusion The purpose of this experiment was to determine whether substances underwent physical or chemic heightens 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 in the first place and aft(prenominal) they were composite. We looked for particular(prenominal) 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, because no reaction occurred. Since no numbers were calculated in this experiment, precision and accuracy was not a big deal. The introductory hardly a(prenominal) substances we experimented with had chemical changes. Which ment that each substance changed from its original property. squealer 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 devolve to a solid by forming a precipitate. The smoke condition off and the precipitate that was formed both are narrate of a chemical change. Also it was an exam ple of exothermic reaction. iodine is very ! toxic. Before the iodine was mixed it was dark silver, metallic, potato chip like, solid. The iodine turned to a purple desiccation immediately. This exploit 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 avouch eyes.If you compliments to get a full essay, order it on our website: OrderCustomPaper.com

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