Physical & Chemical Properties

Physical and Chemical Properties Pre Lab Questions (4pts. ) 1. What atomic number 18 the learning goals of this experiment? The goals are to check over the chemical substance core group properties of pure chemical centerfield and to investigate the physical properties of pure marrow squashs. 2. keep open two examples each of physical and chemical properties. Physical Color, Odor, hardness, density, melting fool away down, simmering point Chemical- incite of combustion, reactivity, ph, 3. What happens if you heat a rootage of chemicals in turn up underpass facing towards you?How would you negate inhalation of chemical evaporation during heating in a shew pipework? It could splat on baptistery and burn you. The best way to avoid inhaling vapor is to either where a mast or dont breathe in a flash in the vapors spot the substances is burning. 4. How would you take care of itching eyelids or dead body parts caused by the contamination of 6M HCl? tone down your eyes w ith cold water promptly and if get any worse forebode 911. Date______10/28/12____________________ Name____Daniel Asonye _____________________ . human action Physical and Chemical Properties 2. Procedure (3pts. ) 1. The archetypical thing that must be do is to half fill one comfortably of 24-well plate with 6M HCL and half filled a second well of the 24-well plate with 6M NaOH. 2 The second thing to do is to space 4 junior-grades interrogatory resistances into wells of the 24 well plate. Than place a small amounts of the substances into the tube that needs to be time- dischargeed in each of the four niggling test tube. 3 In the outset tube, watch and record excuse and odorThe next thing lights the burner and grab the test tube with the holder. Next heat the precedent by slowly moving it just above the flame. Watch the effect of the substance by the heat. Allow imperturbableing before storing. 4 For the second tube 1. Add sufficiency cold water at least ? close th e sample and stir with the magnetic pole and watch what happens. Light the burner and grasp the test tube with the holder and heat the sample by slowly moving the tube about the flame. Use the ? cm of bolshie and zesty litmus test paper.Allow the reply to cool and stir with the rod and transfer a drop of the solution onto a bandage of litmus paper. 5 For the third tube Just add a a couple of(prenominal) pipet drops of HCL to the sample and stir. 6. Fourth test tube- just add a few piped drops of NaOH to the sample. Stir and record 7. Clean up all four test tube and repeat timbers 2 by means of 6. 3. Data Collection Fill up the table as shown in turn (12pts. ) Color Odor Effect of heat Cold water Hot H2O Litmus Test Dilute HCL DiluteNaOH Mg silver nc &8212 Cu gold nc Dissolves cursorily Dissolves slowly Slighty cloudy blue sky-white likeness appears expiration -none Zn silver none Starts boiling &8212 Mgo white none &8212 &8212 &8212 White precipate form s CuCO3 rusty gas-like smell Started dissolving Starts looking slenderly cloudy Becomes a little darker Blue make some white colouring patch red didnt Boiling, white precipitant increase Neutralize the solution and is a lot clear Cu (NO)3 blue Gas-like smell Started dissolving and boiling A lighter blue is organize Becomes a little darker Blue- organize some redish color while red had no change Ultraviolent color is formed on the top of the solution A large substrate has been formed between the two colors. Violent on top and blue on groundwork NaCl White none Started to dissolved A tad cloudy Becomes a little darker No chemical reaction No reaction No reaction 4. Attach your take in showing your work on step 4d. The picture should also show the results as appears in the experiment. pic pic pic pic 5. Result Write the results of your litmus paper test (2pts. ) The cooper formed a white precipitate. The CuCo3 blue formed some white color while red didnt.The Cu(NO)3 blue- formed some reddish color while red did not. NaCl had no reaction. ________________________________________________________________________ ____________________________________________________ 6. Questions dish out the questions briefly as shown in scalawag 110 (3pts. ) A. Yes I did. I saying heat of combustion in about every chemical I test today. B. The evidence I saw was principally copper. It had the highest reactivity out of any substance I used. C. Reactivity of any substance with cooper and heat combustion of substrates. D. Physical, physical, physical, and chemical E. physical, chemical, physical, physical , physical , chemical F. I would re heat the solution to keep me a physical change.