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11 Cards in this Set

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Atom
-smallest particle of matter that retains its identity
subatomic particles
1. proton
2. neutron
3. electron
proton
-a subatomic particle
-located in the nucleus
-+ charge
-mass=1 amu
-atomic nbr (defines the element)
neutron
-located in the nucleus
-no charge
-mass=1 amu
-along with the protons define the atomic mass
-give us isotopes in some cases
electron
- -negative charge
-located around the nucleus in orbitals
-mass= 1/2000 amu (negligible)
-help define the chemical properties by their arrangement around the nucleus (outer shell electrons)
electromagnetic radiation
a form of energy transmitted or propagated in waves
wavelength
-symbol is λ (greek letter lambda)
-the distance between two corresponding distances in the wave train
-long λ=low energy, short λ=high energy
-wavelength = speed of light/frequency ( λ=c/ν )
-measured in nm in electromagnetic spectrum
frequency
-# of maximum passing a point per unit time
-measured in Hertz (Hz) per second (s)...1 Hz = 1 s⁻1 (*should be superscripted 1)
-symbol is greek letter nu (ν)
- frequency = speed of light/wavelength ( ν=c/λ )
amplitude
-height of the wave
-related to intensity (amplitude ^ 2 (*squared) = the intensity)
speed of light
-symbol (c)
- c=2.998 x 10⁸ m s⁻1
energy
-energy (E)
- E = h (plank's constant) ν (energy=plank's constant x frequency)