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Chemistry I
Chapter 5 quiz
26
Chemistry
10th Grade
10/26/2010

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Term
What is wave lengths symbol?
Definition
Term
What is freguencys symbol?
Definition
Term
What is electromagnetic radiation?
Definition
form of energy that comes in waves
Term
What is c?
Definition
speed of light; 3.00x10^8 m/s
Term
What is electromagnetic spectrum?
Definition
all forms of electromagnetic radiation; only freguency and wavelegth differ
Term
What is a quantum?
Definition
minimum amount of energy that can be gained or lost in an atom
Term
What is Planks constant?
Definition
Value: 6.626x10^-34
Term
What is the photoelectric effect?
Definition
photoelectrons are emitted when light is put onto metal
Term
What is a photon?
Definition
massless particle that carries a quantom of energy
Term
What is an atomic emission spectrum?
Definition
consistent waves from an atom of an element
Term
What is ground state?
Definition
opposite of excited
Term
What is a quantum number?
Definition
number assigned to each orbit
Term
What is the de Broglie equatoin? what does each variable represent?
Definition
lamba = h/mv

lambda=wavelegnth
h= Planks Constant
m = mass of particle
v = velocity
Term
What is the Heisenberg uncertainty princible?
Definition
its impossible to precisely find the velocity and position of a paritcle at the same time
Term
What is the Quantum Mechanical Model of the Atom?
Definition
Electrons are waves
Term
What is the atomic orbital?
Definition
a three deminsional region around the nucleus
Term
What is the principal quantum number?
Definition
(n)
indicates the relative size and energy of atomic orbitals
Term
What is the principle energy level?
Definition
Major energy level
Term
What are energy sublevels?
Definition
Principle energy levels contain this
Term
What shape are p orbitals? s? d? f?
Definition
p = dumbell shaped
s = spherical
d&f = not the same
Term
What is electron configuration?
Definition
arrangement of electrons
Term
What is the aufbau principle?
Definition
each electron is in the lowest energy level possible
Term
What is the Pauli exclusion principle?
Definition
2 electrons can contain one orbital
Term
What is Hund's rule?
Definition
single electrons with the same element repel. (CHARGES) up%down arrows
Term
What is a valence electron?
Definition
electrons on the outermost orbitals
Term
Electron-dot structure?
Definition
element symbols which represent the atomic nucleus and inner-level electrons
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