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chem exam 1

serenity g

TermDefinition
back right corner where are the fire extinguisher, fire blanket, eye wash, and first aid
code 1 what to yell if someone gets hurt
lab cabinets where is the goggles gloves and aprons
no should you take anything out the lab
no should you drink in lab
mass amount of matter an object has
balance the way the mass is measured
grams the unit mass is measured with
tare button to press to ignore the weight of massing tray
no should you place heavy or hot items on a balance
volume amount of space ab object takes up
1 milliliter 1 cubic centimeter
no does a 150 ml beaker have graduations up to 150 ml
erlenmeyer flask used for boiling liquids
droppers name for ungraduated pipette
medicine droppers graduated pipette
hot hands and beaker tongs 2 ways to pick up a hot beaker
no should you set a hot beaker on cold table
heat resistant mat place to set a hot beaker
alcohol burner type of burner used in the lab
mortar bowl used for grinding and crushing
pestle stick with mortar
tweezers forceps
scientific meth logical and orderly way to solve problems
1st sci. meth step state prob or quest.
2nd step fir sci meth research
3rd SM step hypothesis
4th SM step experiment
5th SM step analyze data
last SM step draw conclusion
how many groups in experiment 2
control group used for comparison
amount of variables tested 1
var. controlled by experimenter indep.
name of var. changed bc of the experimenter dep.
variables that stay same constant
precision how close measurements are to each other
precision is defined by the closeness of a measurment
precision is determined by instrument and technique
significant figures shows how precise measurements are
measurments with numbers quan.
measurments w/o numers qual.
science a body of knowledge and a method of gaining more knowledge
chemistry study of matter and its changes
macroscopic can be seen w naked eye
microscopic microscope is needed to see it
submicroscopic things that can't be seen even w a microscope
Created by: serenityg
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