Chem 2 Flashcards
With absolute value you _
Convert negative numbers to positive
When measuring with two instruments, calculated answer needs to be
No more than least accurate instrument
Least accurate instrument includes less
Sig figs
A conversation factor is a relationship between two
Units
Heat is total energy of _ in a substance
Molecular motion
Temperature is a measure of average _ in a system
Kinetic energy of atoms or molecules
Measurements for beaker and Erlenmeyer flask approximate to nearest _
Milliliter
Volumetric flasks used for more precise volume measurements than
Erlenmeyer flask
Volumetric flask only has one _ for a very specific volume
Mark
With an Erlenmeyer flask, you can use a _ to save contents for later
Stopper
Filter paper is used to separate _ from _
Solids or precipitates
Liquids or solutions
Fold _ to fit funnel
Filter paper
Precipitate is a _ that separates from solution
Insoluble solid
Graduated cylinder is fairly accurate to the _ place
0.1
Meniscus is the _ of a solution
Curved surface
When measuring liquid or solution, be sure to measure to the bottom of
The meniscus
With a pipette you , _ and ,
Draw correct amount
Check measurement
Transfer
Butter stand usually accumulate to the _ place
0.01
Double pan balance used to compare
Weight of two objects
On double pan balance, when two pans are level _
Masses are the same
Weighting boat or weighing paper used to
Hold the substance to be massed
When using a weighing boat, be sure to _ before adding substance
Get mass of boat
Scoopulas and spatulas are used to
Transfer solid substances from one container to another
