Section 1
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photon
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Last updated
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Date created
Mar 1, 2020
Cards (59)
Section 1
(50 cards)
photon
a particle of light
electromagnetic spectrum order (lowest to highest frequency)
radio, microwave, infrared, visible, UV, x-ray, gamma
what happens when an electron returns to ground state
it emits a photon
velocity
how to find mass number
number of protons and neutrons
what happens when an electron gets excited
it jumps to a higher orbital
electrons are lower in energy the close they are to the nucleus
true
speed of light formula
c=λv
daltons atomic theory
-atoms were the smallest unit of matter -all matter is made of atoms - atoms of same element has identical mass and physical properties -all chemical reactions involve rearrangement of atoms
ground state
The lowest energy state of an atom
energy of a quantum equation
Where is the atomic number located?
bottom left
how to calculate energy of a photon from wavelength
plancks constant (h) X speed of light (c)/ wavlength (lambda)
speed of light
c=3.00x10^8 m/s
what happens to energy as frequency increases
increases
longest to shortest wavelength colors
ROYGBIV
electromagnetic spectrum order (longest to shortest wavelength)
radio, microwave, infrared, visible, UV, x-ray, gamma
ion
a charged atom
How to find the number of neutrons
mass number - atomic number (top left- bottom left)
what did planck contribute to the quantum theory
discovered quanta and said that energy is not continuous
frequency
mass number
sum of protons and neutrons
excited state
electron moves to a higher energy level
plancks constant
6.626 x 10^-34
quanta
packets of energy
the speed of light never changes in a
vaccum
atomic number
number of protons
spectroscopy
The study of the properties of light that depend on wavelength.
wavelength
distance between two crests (
molecule
A group of atoms bonded together
thomsons cathode ray
high voltage causes a beam of particles to flow from cathode to anode. The reflection of particles shows that the cathode ray is composed of mostly negatively charged particles.
isotope
same atoms of an element with different number of neutrons
rutherfords atomic model
ball of nucleus and electrons floating around with 3d orbitals
average atomic mass
1. convert percents to decimals (move decimal two times to the right) 2. multiply by mass number
What happens to frequency as wavelength increases?
decreases
unit and symbol for frequency
hertz and nu
what did einstein contribute to the quantum theory
light had particle like properties and carried discrete amounts pf quanta
unit and symbol for wavelength
meters and lambda
thomson discovered
electrons
thomsons atomic model
atoms with electrons floating in a positive ball (plum pudding)
number of electrons
same as protons
daltons atomic model
just a circle
how to find mass number of most abundant isotope
electromagnetic spectrum order (lowest to highest energy)
gamma, x-ray, UV, visible, infrared, microwave, radio
where is the mass number located?
top left
unit and symbol for velocity
v and m/s
what did democritus say about the atom
They are indestructible and indivisible
energy level
2, 8, 18, 32
electromagnetic spectrum
the range of wavelengths of different radiation
how to find atomic number
number of protons
Section 2
(9 cards)