CHM 103 EXPERIMENTS FIRST SEMESTER GENERAL CHEMISTRY NAME Experiments in First Semester General Chemistry 1 Mass Volume Density and Error 1 TABLE OF CONTENTS Experiment 2A Density and Error with Excel 12 2B Avogadro s Number 16 3 Determination of the Formula of a Compound 23 4 Chemical Reactions 32 5 Molarity Determination of the Concentrations of Acid and Base Solutions 41 6 Aqueous Reactions Single Displacement and Double Displacement Reactions 51 7 The Gas Laws 59 8 Determination of the Gas Constant R 65 9 Hydrogen Atom 72 10 Concentrations of CuSO4 Solutions by Spectroscopy Spectrophotometric Analysis of Cu2 83 11 Lewis Structures Molecular Geometries and Molecular Models 90 12A Nuclear Chemistry 98 12B Solubility and Intermolecular Forces 104 Pre Lab Notes Paired with Pre lab videos Canvas 111 Table of Contents i Experiments in First Semester General Chemistry Chemistry Laboratories SAFETY POLICY AND PRACTICES by your instructor If your glassware is broken or cracked replace it If you are asked to observe the odor of a substance waft the vapors to your nose with your hand The chemistry laboratory is probably not as dangerous as the average home One reason for this is that precautionary measures are constantly taken in a laboratory Chances are that no member of your laboratory section will sustain any injury if the following rules are followed at all times 1 Safety goggles are to be worn in the laboratory as required to be in compliance with State law and or as directed 2 Know the location and proper use of eyewashes and safety showers 3 Keep chemicals away from skin Chemical spills on the skin should be washed thoroughly with water 4 While heating any vessel never point it at yourself or your neighbors 5 Never heat a closed vessel or apparatus 6 7 Many chemicals have toxic vapors A good rule to follow is if it isn t air don t breathe it Use the fume hood 8 9 Heed your instructor s pre experiment warnings 10 Follow the instructions in the laboratory manual Never do extra experiments without consulting your instructor 11 Conduct laboratory work only while under the supervision of a faculty member 12 If you do sustain a cut or burn inform your instructor If it is a minor injury wash it thoroughly and cover it 13 Bulky or loose fitting clothing and jewelry can be a hazard and should be avoided in the lab Short pants or 14 Contain long hair 15 If you are required to wear a plaster cast or heavy bandages do not enter the laboratory Check with your instructor as to when you can make up missed work 16 No eating drinking or chewing gum in the laboratory 17 When inserting or adjusting glass tubing in a stopper place a towel between your hands and the glass Never 18 Keep water away from electrical equipment and outlets to avoid electrocution Not all labs are equipped with 19 Do NOT wear headphones or ear buds in the laboratory Wearing headphones prevents you from communicating ground fault interrupters Notify instructor if equipment gets wet force the glass by placing your hand over the end of the tubing skirts and open toed shoes can also be a hazard with a clean gauze pad effectively with your lab partner and instructor and can also result in missing important safety or experimental instructions during the lab period 20 Cell phones should be properly stowed in backpacks or pockets and should not be out during lab unless you have 21 In the event of a fire there are fire extinguishers available in lab Notify your instructor and people around you express consent from your instructor Use the lab period to work on your experiment and ask questions IMMEDIATELY in the event of a fire If your clothes catch fire stop drop and roll or if you are in close proximity to the safety shower pull the cord to put out the fire Safety Policy and Practices iii Experiments in First Semester General Chemistry by your instructor If your glassware is broken or cracked replace it If you are asked to observe the odor of a substance waft the vapors to your nose with your hand CHEMISTRY LABORATORIES SAFETY POLICY AND PRACTICES The chemistry laboratory is probably not as dangerous as the average home One reason for this is that precautionary measures are constantly taken in a laboratory Chances are that no member of your laboratory section will sustain any injury if the following rules are followed at all times 1 Safety goggles are to be worn in the laboratory as required to be in compliance with State law and or as directed 2 Know the location and proper use of eyewashes and safety showers 3 Keep chemicals away from skin Chemical spills on the skin should be washed thoroughly with water 4 While heating any vessel never point it at yourself or your neighbors 5 Never heat a closed vessel or apparatus 6 7 Many chemicals have toxic vapors A good rule to follow is if it isn t air don t breathe it Use the fume hood 8 9 Heed your instructor s pre experiment warnings 10 Follow the instructions in the laboratory manual Never do extra experiments without consulting your instructor 11 Conduct laboratory work only while under the supervision of a faculty member 12 If you do sustain a cut or burn inform your instructor If it is a minor injury wash it thoroughly and cover it 13 Bulky or loose fitting clothing and jewelry can be a hazard and should be avoided in the lab Short pants or 14 Contain long hair 15 If you are required to wear a plaster cast or heavy bandages do not enter the laboratory Check with your instructor as to when you can make up missed work 16 No eating drinking or chewing gum in the laboratory 17 When inserting or adjusting glass tubing in a stopper place a towel between your hands and the glass Never 18 Keep water away from electrical equipment and outlets to avoid electrocution Not all labs are equipped with STATE OF WISCONSIN LAW Statute 146 015 SAFETY EYE PROTECTIVE GOGGLES 1 force the glass by placing your hand over the end of the tubing ground fault interrupters Notify instructor if equipment gets wet with a clean gauze pad skirts and open toed shoes can also be a hazard Every student and teacher in schools colleges universities and other educational institutions participating in or observing any of the following courses is required to wear appropriate industrial quality eye protective goggles at all times while participating in or observing such courses or laboratories a Vocational Technical or industrial arts shops chemical or chemical physical laboratories involving exposure to b Chemical
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