chemistry test
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25 Terms
Name, function, units
goggles
-to protect the eyes from external hazards like chemicals and dust
no units
when do you wear goggles?
They are worn im still
Name, function, units
Bunsen burner
used to heat things
no units
Name, function, units
striker
used to light a bunsen burner
no units
Name, function, units
test tube
use to hold and mix small samples
no units
Name, function, units
erlenmyer flask
holds liquid you need to stir, used for chemical reactions
units are mL
Name, function, units
beaker
used to mix, transfer, or hold liquids
untis are mL
Name, function, units
test tube clamp
used to hold and grip test tubes
no units
Name, function, units
volumetric flask
accurate piece of equipment to make solutions
units are milliliters and liters
Name, function, units
alcohol and electric thermometer
used to meature temperature
units in celcius
Name, function, units
triple beam balance and electronic balance
used to measure mass of objects
units in grams
Name, function, units
graduated cylinder
accurately measures liquids
units in mL
Name, function, units
funnel
to pour liquids form one contianer to another
no units
Name, function, units
stirring rod
used to stir liquids
no units
Name, function, units
dropper pipet
transfer small, exact amounts of liquid
units in mL
What is the appropriate SI unit for distance?
Meters
What is the appropriate SI unit for mass?
Kilogram
What is the appropriate SI unit for volume?
cubic meter
When you use water displacement, what are you finding?
VOLUME
When looking for accuracy, what are you trying to find?
If the average of all the data is close to the actual amount.
When looking for precision, what are you trying to find?
If all the individual data and very close and consistent with each other.
Systematic error
A broken setup or machine that pushes your data in the same wrong direction every single time.
Reproductibility error
The ability to get the same exact results when a different person or a different lab group runs the same test.
What does systematic error go with?
Accuracy, if the system is broken and does not aim for the correct answer but all the wrong ones, it ruins your accuracy.
What does reproductibility go with?
It goes with precision because the the data cannot be copied exatcly the same, like a dart with bullets everywhere.