Chem 1LC practical Questions With Complete Solutions
a in pass Correct Answers aim the extinguish
a potential source of danger or harm Correct Answers hazard
always wear goggles Correct Answers eye exposure
Because SDS ____________ legally required to be accurate, one
should _________ Correct Answers are not; examine SDSs
from different manufacturers
cap flasks containing volatile liquids Correct Answers
inhalation
causes adverse health effects Correct Answers toxic
causes sever immune reaction after repeated exposure Correct
Answers sensitizer
chemical or physical change/property
1. melting point of water is 0 degrees Celsius
2. when an aqueous solution with a pH less than 7 is added to
sodium bicarbonate, bubbling occurs
3. cooking an egg
4. lowering of vapor pressure
5. combination of yellow and blue paint to create a green paint
6. formation of solid after reagent combination
7. crystal formation upon solution formation Correct Answers
1. physical
2. chemical
, 3. chemical
4. physical
5. physical
6. chemical
7. physical
clean surface, wear gloves and lab coat Correct Answers skin
exposure
collodial suspension of sloid or liquid particles in air Correct
Answers fumes
coming in contact with a hazard Correct Answers exposure
consistently reading the buret volume by looking up at the liquid
level Correct Answers methodological error
destroys living tissue on contact Correct Answers corrosive
do not put anything inn your mouth that has been in lab Correct
Answers ingestion
easily ignites and burns rapidly Correct Answers flammable
eliminated by good experimental methods and more than 1
calibration step Correct Answers systematic error
failure to read the last significant figure (the uncertain number
between the markings) from a buret Correct Answers personal
error
a in pass Correct Answers aim the extinguish
a potential source of danger or harm Correct Answers hazard
always wear goggles Correct Answers eye exposure
Because SDS ____________ legally required to be accurate, one
should _________ Correct Answers are not; examine SDSs
from different manufacturers
cap flasks containing volatile liquids Correct Answers
inhalation
causes adverse health effects Correct Answers toxic
causes sever immune reaction after repeated exposure Correct
Answers sensitizer
chemical or physical change/property
1. melting point of water is 0 degrees Celsius
2. when an aqueous solution with a pH less than 7 is added to
sodium bicarbonate, bubbling occurs
3. cooking an egg
4. lowering of vapor pressure
5. combination of yellow and blue paint to create a green paint
6. formation of solid after reagent combination
7. crystal formation upon solution formation Correct Answers
1. physical
2. chemical
, 3. chemical
4. physical
5. physical
6. chemical
7. physical
clean surface, wear gloves and lab coat Correct Answers skin
exposure
collodial suspension of sloid or liquid particles in air Correct
Answers fumes
coming in contact with a hazard Correct Answers exposure
consistently reading the buret volume by looking up at the liquid
level Correct Answers methodological error
destroys living tissue on contact Correct Answers corrosive
do not put anything inn your mouth that has been in lab Correct
Answers ingestion
easily ignites and burns rapidly Correct Answers flammable
eliminated by good experimental methods and more than 1
calibration step Correct Answers systematic error
failure to read the last significant figure (the uncertain number
between the markings) from a buret Correct Answers personal
error
