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CHEMISTRY Taylor Chan period 6, Electrons - Coggle Diagram
CHEMISTRY Taylor Chan period 6
Orbitals
Orbital Orientation
each orbital has ONLY two electrons
Orbital Shape
s,p,d,f
Energy Levels
different orbitals have different energy levels (n=1,2,3,4,5,6,7)
Atomic Orbitals
An area where an electron is most likely to be found
Orbital Diagrams
Aufbau Principle
electrons fill lowest energy level first
Pauli Exclusion Rule
two electrons may have same set of four quantum under certain circumstances
Hund's Rule
electrons will fill each equal energy orbital before pairing up
Configurations
Noble Gas Config.
ions
make ions to make noble gas
an atom with a charge
Noble Gas
A full valence shell s and p orbital full
Solutions
dissolve
when molecules of solute are surrounded by molecules
Saturation
Super saturated Solution
more than the max amount of solute dissolved
Unsaturated Solution
less than maximum amount of solute dissolved
Saturated Solution
maximum amount of solute dissolved
Properties of solutions
solvent
the thing that something is being dissolved into
solution
the solute+solvent combined
solute
substance that is being dissolved in a solution
solubility
the amount of solute
dissociate
when an ionic compound has ionic bond disrupted by solvent molecules and breaks into individual ions
electrolytes
ionic solutes that dissociate into ions in a solution
non-electrolytes
covalent solutes that DO NOT dissociate but can still potentially dissolve in a solvent
Important equations
grams/liter
mass of solute/volume of solution
parts per million
mass of solute/mass of solution*1,000,000
mass % or % composition
mass of solute/mass of solution*100
mole fraction
solvent na+solvent nv
molarity
M=moles of solute/L of solution
Reactions
Types of Reactions
double replacement
swapping 2 elements
combustion
burning
single replacement
swapping one element
decomposition
1 thing formed into 2 things
synthesis
two things combining into one
Balancing Chemical Equations
equations where atoms are equal on both sides of a chemical equation
Molar Mass+Conversions
1 mol=6.02E23 objects
Use periodic table to find out molar mass
Basic Chemistry and Atomic Structure
Atomic Numbers and Isotopes
Periodic Table
Isotopes
atoms of same the same element having different masses
Average Atomic Mass
average of all naturally occurring isotopes of that elemnt
Atoms
Protons
Positively charged
Electrons
Negatively charged
Neutrons
Neutral
Theories
Modern Atomic Theory
Dalton Atomic Theory
Properties, Changes, and Types of Matter
Changes
Chemical Changes
alters composition/identity of substance
Physical Changes
alters only state/appearance of substance
Types of Matter
extesnive
depend on amount of matter present
intensive
depend on type of matter present
Properties
Chemical Properties
a property that substance displays only by changing in composition
Physical Properties
a property that a substance displays without changing composition
Sig Figs
Metric System
Metric Conversions
Dimensional Analysis
Conversion Factors
Periodic Table
Periodic Trends
Ionization Energy
Ionic Radius
Reactivity
Electronegativity
Bonds
Covalent Bonds
atoms can't fully transfer electrons so they share (nonmetal+nonmetal)
Ionic Bonds
transfer of electrons makes charges (metal+nonmetal)
Metallic Bonds
electrons detach from atoms they came from
Compounds
neutral compounds
ionic compounds
Ions
anion
negative ion
cation
positive ion
monatomic ion
consist of 1 element
polyatomic ion
consists of 2+ elements
Bonding and Structure
Lewis Structure
Single Atoms
each dot = a VE
Anions
adjust # of VE
Octet Rule
most atoms want 8 electrons
Cations
will show depending on shell
Polarity
Polar
covalent molecules not shared equally
Nonpolar
equally shared covalent molecules (no electronegativity)
IMF
Intermolecular Force
Hydrogen Bonds (strongest)
Diple Dipole
London Dispersion Force (weakest)
VSEPR
Axe Method
Electron Geometry
Molecular Geometry
Lone Pairs
Stoichiometry
mole ratios
the "key" to stoichiometry
use balanced chemical equation
Coefficients
Stoichiometry
calculating amount of reactants/products that are involved in a reaction
Yields
actual yield
the quantity that you actually made in experiment
theoretical yield
the quantities that the stoichiometry calculates predict should be made
percent yield
actual yield/theoretical yield*100%
Advanced Chemical Ratios
Percent Composition
determining how much of a molecules mass is from each element
steps
find molar mass
divide by atomic mass of each element by molar mass of molecule
multiply by 100 to put in terms of %
Formulas
Empirical Formula
simple, reduced version
determining empirical formula: given % comp, assume you have 100 g sample, use rhyme
Molecular Formula
expanded formula
Covalent Formulas
sometimes empirical
Limiting Reagent Stoichiometry
Excess Reagent
the chemical you have extra left over of
Limiting Reagent
the chemical you run out of too soon
Thermochemistry
Calorimetry
measuring the amount of heat energy transferred with changes of state
Heating/cooling
sloped parts of graph
issue: speed; all anergy going towards speeding up
Q=mc∆t
C ice
209 j/gc
C liq
418 j/gc
C steam
187 j/g c
Specific Heat
represented by equation Q=mc∆t
c
specific heat
∆t
change in temp (tfinal-tinitial)
m
mass
Q
energy lost or gained
amount of energy it takes to raise temperature of 1g of something by 1 degree C
heat
losing heat
exothermic
gaining heat
endothermic
Phase Changes
flat parts of graph
issue: position; all energy going towards spreading out
Q=mL
Lfus
334 j/g
Lvap
2260 j/gc
activation energy
smallest amount of energy required for molecules to be activated to go to specific chem change
Kinetics
reactions
collision theory
reactants must collide to react
activation energy
minimum amount of energy colliding particles need to react
factors of rxn rate
concentration/pressure
surface area
catalysts
temperature
catalysts
chemical you add to rxn that lowers activation energy and makes faster rxn
rate
rate determining step
in a multi-step rxn, this is the slowest step and it determines rate of rxn
average rate
not always constant
avg rate= ∆x/∆t=[x]final-[x]initial/tfinal-tinitial
instantaneous rate
rate of change in particular instant
rate law
expresses math relationship between rate of chem rxn and concentration of rxns
defined in terms of reactant concentrations
steps for determining order
write skeleton rate law
look at experimental data
find 2 trials
Equilibrium
Le Chat Principle
If stress applied to rxn at equilibrium the rxn changes to relieve stress; will have to find new equilibrium
Equilibrium Constant and Quotient
product favored
K>1
K<1
equal concentration
K=1
ICE tables
stands for initial, change, equilibrium
determining concentration @ equilibrium
Acids and Bases
bases
cleaning products, bitter, slippery, commonly solids
acids
juice/fruits, tart, sour, electrolytes, react with metal, commonly aqueous
Arrhenius
Bronsted-Lowry
Lewis
Conjucates
turn into Conjucgates once they lost proton/hydrogen
Electrons