Chem 101l lab 2 - Study guides, Class notes & Summaries

CHEM 101L Lab 2 The Scientific Method

All of the following are rules which must be followed during an experiment except: Select one: a. The experiment must be replicable over several trials b. There must always be quantifiable data c. Only one variable can be tested at a time d. There must always be a control True or false: A testable question asks how the independent variable has an effect on the dependent variable. Select one: a. True b. False Suppose you conduct one experiment and find that the E = mc , rather than the...

CHEM 101L Lab 2 The Scientific Method (Straighterline 2023) Pre lab questions/CHEM 101L Lab 2 The Scientific Method (Straighterline 2023) Pre lab questionsCHEM 101L Lab 2 The Scientific Method (Straighterline 2023) Pre lab questionsCHEM 101L Lab 2 The Scientific Method (Straighterline 2023) Pre lab questionsCHEM 101L Lab 2 The Scientific Method (Straighterline 2023) Pre lab questionsCHEM 101L Lab 2 The Scientific Method (Straighterline 2023) Pre lab questionsCHEM 101L Lab 2 The Scientific Method...

CHEM 101L Lab 2 The Scientific Method- Straighterline University/CHEM 101L Lab 2 The Scientific Method- Straighterline University/CHEM 101L Lab 2 The Scientific Method- Straighterline University/CHEM 101L Lab 2 The Scientific Method- Straighterline University/CHEM 101L Lab 2 The Scientific Method- Straighterline University/CHEM 101L Lab 2 The Scientific Method- Straighterline University

A physical property that depends on only the type of material and not on how much of that material that you have is known as Select one: a. Inheritable property b. Intensive property c. Extensive property d. Exhausted property True or false: If you are changing a larger unit into a smaller unit, like cm into mm, the decimal is moved to the right because you are multiplying by a power of ten Select one: a. True b. False The metric system is based upon Select one: a. Multiples of 1 ...

CHEM 101L UNC FINAL QUESTIONS AND ANSWERS If a flammable substance in a beaker should catch fire while you are working but the flames are relatively contained, what should you do to extinguish the flame? What should you not do? DO: Use the chemical fire extinguisher from the lab. Pull the pin, aim the nozzle to the beaker, and pull the lever. DO (Best, simplest): Turn off the heat source immediately and use a watch glass to cover the beaker. DON'T: Use water from the nearest sink to d...

CHEM 101L FINAL QUESTIONS AND ANSWERS exit the lab and proceed to the stairs nearest the Venable parking lot and Columbia Street. After exiting on the ground floor you should meet your TA on the far side of the driveway to the parking lot so that you can be included in a head count of those safely evacuated, keeping the drive clear for emergency vehicles/exit the lab and proceed to the stairs nearest the elevator. After exiting on the ground floor you should meet your TA in front of the sig...

CHEM 101L QUESTIONS AND ANSWERS when should you not wear gloves in the laboratory setting? when using your laptop, opening the door what should you do if you get solution on your gloves and up your arm notify the TA, rinse arm under distilled water for at least 15 min when is it acceptable to eat at the lab bench? NEVER! if you are hypoglycemic take your snack outside of the lab define accuracy How close data measurements are from the accepted or "true" value. define precisi...

CHEM 101L QUESTIONS AND ANSWERS Apparel Attire: long well fitting cotton or wool clothing; closed leather shoes, no jewelry, no make up application, no contacts PPE Always wear googles, wear gloves except when leaving the lab and working with electronics/labtop Chemical Safety- -1-label -2-spill -3-acid or water Bunsen Burner Safety- -1-step one? -2-flame goes out? smell gass? -3-chipped glass? -4-how to heat flammable chemicals? Thermometer safety -1-shake it? -2-temp range ...

CHEM 101L QUESTIONS AND ANSWERS How should you dress in lab? -No exposed ankles -Shoes that cover the upper part of your foot -Any clothing with holes offers no protection from spills and other lab hazards. If you need to work with a flammable or volatile solvent, which piece of lab equipment should you be sure to use? Fume hood with good ventilation What is the most important consideration to preserve safety when it is necessary to feed tubing, thermometers, or another apparatus th...