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28 Cards in this Set

  • Front
  • Back
Units of Measurement
kilo hepta deca deci centi and milli (King Henry died by drinking chocolate milk)
Meter
length
Kilogram
mass
Liter
Volume.
Second
time
Kelvin
Temperature
1cm3
1 ml
1dm3
1 L
The name of the curve in glass
meniscus
How do your measure a meniscus
at the lowest point
Temperature
the measure of how hot or cold the object is relavtice to other objects
Absolute zero
where all molecular motion ceases (zero kelvin)
Volume
the space occupied by an object (cm3)
Density
the ratio of mass to volume. It can be used to identify a sample of mass.
D=
mass/volume=g/cm3= g/ml
1.1 sink .9 float
Scientific notation
easy way to handle extremely large or small number. Numbers expressed in scientific notation are a product of two factors. A number betweeen 10 and 1 and ten raised to a power.
Circle Graphs
show parts of a whole
Mole
6.022 x 10^23
Bar Graphs
show how a factor varies with time, location, or temperature.
Slope
steepness of a line
slope equation
y2-y1/x2-x1
When te mass of a material is plotted against volume...
the slope of the line is the density of the material
significant figures
reflects the precision of reported data. Answers to calculations are rounded off to maintain the correct number of significant figures.
Rules for Significant Figures
non-zero numbers are always significant. zeros between non-zero numbers are always significant numbers. all final zeros to he right of the decimal place are significant. zero that act as placeholders are not significant.
accurate measurement
close to the accepted value. it shows little variation over a series of trials there will be little variation.
Percent error
the ratio of an error to an accepted value. error/accepted value x100%
convert kevlin to celsius
minus 272
convert celsius to kelvin
plus 273