Chemistry Lab Chemical and Physical Properties

Lab 4 PHYSICAL AND CHEMICAL PROPERTIES calculate To find out which of these substances will cause a somatogenetic or chemic substance assortment. To document the different physical and chemical tilts. DATA solvability OR REACTIONSubstancename Color Odor Effect Of heat Cold body of pee Hot H2O Litmus Strip Dilute HCl Dilute NaOH Mg Shinny plateFlakes no(prenominal) Turned darker, less shinny No change No change No change steadfast dit Bubbled, steamed, resembling shape none Cu CopperBe be None Turned shinier No change No change No change wet window glass No change None Zn Shinny Silver Pieces None Shinier & darker No change Less shinny No change wet dot Warm steam bubbles dull in show None MgO Off- whitePowder None Little darker color Turned water milky & or so dissolved Separated rosy-cheeked glum blue, blue no change Hot dissolved turned yellow None CuCO3 Light cat valium powder None Turned to black powder Turned water green stayed detach Sepa rated No change wet dot Bubbled dissolved turned bright green Turn blue Cu(NO3)2 expert blue crystals None Turned turquoise & to a thick luculent body of water light blue, separate Dissolved, blue water Blue turned red, red no change Turned green, stayed separate None NaCl color crystals None No change Stayed separate Dissolved, water clear Red no change, blue dark dot No change separate None OBSERVATION I didnt smell a difference of opinion in any except when heated or mixed with HCl. The trump out changes happened with the HCl, and glowing water. It was interesting to see what changed with what and how. CALCULATIONS None CONCLUSION The CuCO3 had the most changes with wholly the experiments. It was cool to see the chemical and physical changes. I saw color changes and solid to liquid changes. Only three had changes on the litmus paper. in that location was only one change with the dilute NaOH. The changes were different than I evaluate physically and chemically. QUES TIONS A.Did you observe any chemical changes in this experiment? Yes thither were a lot of chemical changes with the HCl, one with the NaOH, and some with heat and hot water. B. What evidence did you use to decide that something was a chemical change? The jump and ending product were different, color change, sound, heat, and bodge production. C. Give at least two examples of chemical changes you observed HCl and CuCO3 turned bright green, NaOH and CuCO3 D. Classify the succeeding(a) properties of sodium metal as physical or chemical * Silver metallic color chemical * Turns gray in air chemical * Melts at 98*C physical * Reacts explosively with chlorine gas chemical E.Classify the following changes as physical or chemical * Water freezes at O*C physical * Baking soda when have with vinegar produces bubbles chemical * Mothballs gradually disappear at room temperature chemical * Ice cubes in freezer get smaller with time chemical * Baking soda loses mass as its heated chemical * T arnishing of atomic number 47 chemical F. How would you show that dissolving table salt is a physical change? When you dissolve salt it is a chemical change because it dissociates in Na+ ions and Cl- ions. But when you remove the water then the salt corpse which is physical change. (http//chemistry. about. com/od/matter/a/lsdissolving-salt-in-water-a-chemical-change-orphysical-change. htm )