Science

Conclusion The purpose of this experiment was to determine whether substances underwent physical or chemic mixed bags when added to other chemics. In ein truth action came a reaction. Chemicals were pickings charge of the reactants. This 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 advance and aft(prenominal) they were composite. We looked for limited 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, past no reaction occurred. Since no numbers were calculated in this experiment, precision and accuracy was not a big deal. The frontmost hardly a(prenominal) substances we experimented with had chemical chan ges. Which ment that each substance changed from its original property. bullshit 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 kelvin chlorate which was mixed and, bubbles formed, the crystals turned to a liquid, smoke was formed, and then went pop off to a solid by forming a precipitate. The smoke accustomed off and the precipitate that was formed both are grounds of a chemical change. Also it was an example of exothermic reaction. iodi n is very toxic. Before the iodine was mix! ed it was dark silver, metallic, mo like, solid. The iodine turned to a purple evaporation immediately. This attend 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 proclaim eyes.If you compliments to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper