Unit 1 Chemistry Fundamentals and Stoichiometry Flashcards
The Unit For Length
mcm
The Unit For Volume
L, mL
The Unit For Mass
kg, g
How is length measured
ruler
How is volume measured
graduated cyclinder, burette for titrations, volumetric flask for dilutions
How is mass measured
balance
1L = ?mL
1000 mL
1kJ = ?J
1000 J
1m= ? nm
10^(9)
T(k) = T(c) + ?
273
How to calculate density
Mass/Volume = Density
How to calculate volume
mL - mL = v
Distillation
Separates a mixture of liquids with different boiling points
Decantation
Separated substances based on density
Filtration
separates liquid from an insoluble solid
Evaporation
Separates a soluble solid (dissolved in liquid) from liquid
Chromatography
Often based on differences in solubility
Paper chromatography
Paper is then placed into a beaker or jar with the mobile phase at the bottom
Column Chromatography
Mixture to be separated is added to the top of the column and the mobile phase is also added on top of that
Three Major Components of an atom
Neutrons, protons, electrons
To get neutrons you ___________
subtract the atomic mass from the atomic number
Writing isotopes symbol
Mass number on the top left, Chemical symbol, Atomic number on the bottom left
Writing isotopes name
The name of the elements then the mass # on the top left
ex: cobalt-60
How to get the # of protons and electrons
atomic mass is the protons and electrons
Yellow light from a lamp has a wavelength of 589 nm, what is the frequency? (c =λ𝜈)
3 x 10^(8)/5.89 x 10 ^
(-7) = 5.89 x 10 ^
(-7) / 5.89 x 10 ^
(-7) = 5.09 x 10 ^(14) s^(-1)
E=hv
E= 6.626 x 10^(-34) v
E= hv/𝜈
same thing as the last one but you divide
E = ______
energy
H = _______
planck’s constant
C=___________
speed of light
λ=_______
wavelength
v = ___________
frequency
