Chemistry Lab 103 Mid-Term

accuracy
how close your value is to the actual value
precision
how close your values are to each other
percent error =

[experimental value – known value] X 100


 known value  

                                                         

Density =

Density = mass / volume

 

mobile phase
the phase that travels through the column
stationary phase
the phase that does not move through the column
Rf
distance traveled by the front edge of the compound / distance moved by the front edge of the solvent
column chromatography
the stationary phase is a solid supported in a column
specific heat =
heat / (mass X temperature change)
What is visible range?
400-700 nm
If the wavelength is small the energy is?
higher
If the frequency is higher the energy is?
higher
NaCl gives off what color?
orange
KCl gives off what color?
purple
LiCl gives off what color?
red
CuCl gives off what color?
green
What are the typed of waves from highest energy to lowest energy?

Gamma rays

X-rays

UV

Visible

Infrared

 

x

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