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CHEM105
Cards to help me study for the final.
24
Chemistry
Undergraduate 1
12/08/2009

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Cards

Term
Mass of Neutron in AMU
Definition
1.009 amu
Term
Mass of Proton in AMU
Definition
1.007 amu
Term
Mass of Electron in AMU
Definition
0.0005 amu
Term
1 mole
Definition
6.022e23
Term
1 in = x cm
Definition
2.54 cm
Term
100 cm = x m
Definition
1 m
Term
1 meter = x micrometers
Definition
1,000,000 micrometers
Term
density equals
Definition
mass over volume (D=m/v)
Term
density of water
Definition
1 g/mL
Term
speed of a wave equals
Definition
wavelength times frequency
Term
energy of a wave equals
Definition
Planck's constant times frequency
Term
In Bohr's model, electron energy depends on _______.
Definition
orbit. (1/n^2)
Term
In Bohr's model, energy is absorbed when electrons move to ________ orbits.
Definition
higher. (n increases)
Term
In Bohr's model, energy is emitted when electrons move to ______ orbits.
Definition
lower. (n decreases)
Term
Bohr Model only works for _____.
Definition
hydrogen
Term
In Bohr's model, adding energy to an atom (by absorbing a photon)brings its energy closer to ___. Is the change positive or negative?
Definition
zero. positive.
Term
In Bohr's model, taking energy from an atom (by emitting a photon) makes the atom's energy more positive or negative?
Definition
negative.
Term
What are the four weaknesses of the Bohr Model?
Definition
Only works for hydrogen, doesn't explain why orbits are quantized, doesn't explain why orbits are stable, ignores wave-particle duality of electrons.
Term
Bohr Model is like
Definition
solar system
Term
Schrodinger Model is like
Definition
wave
Term
Ionization Energy
Definition
The amount of energy it takes to completely remove an electron from a gaseous atom.
Term
Electron Affinity
Definition
The amount of energy released when an electron is added to a neutral gaseous atom.
Term
Electronegativity
Definition
A measure of how tightly an atom attracts electrons.
Term
Isoelectronic
Definition
Species that have the same number and kind of electrons.
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