chemistry exam Flashcards
what did debroglie discover
wave particle duality
what was planks contribution
the concept of a quanta of energy
what did schrodinger contribute
the wave equation
what did bohr use to discover energy levels
line diagram
teh quantum mechanical model of the atom treats the electron like ____
a wave
what are the number of neutrons in a c-14 isotope
8
what colour of light emitted with the largest electron transitions would be __
violet
what did pauli say
said that two electrons in the same orbital must have opposite spins
the set of quantum numbers that is possible is
n=1, l=1, m1=-1, m2=-1/2
n=1, l=0, m1=0 m2=-1/2
n=2, l=1, m1=2, m2=1/2
B
what did albert einstein discover
the photoelectric effect
what elements are paramagnetic
al and pt
hunds rule
one electron must occupy each orbital before a second electron occupys an orbital
what is the principle quantum number
describes the energy shell
what elements use ferromanetism
ni fe and co
electronegativity
> .4 non polar covalent <0.4 polar covalent <1.8 ionic bond
non metals tend to ____
gain electrons
what is the heisenberg uncertainty principle
determined that it is impossible to predict the exact location of an electron
a unit of light energy is called ____
a photon
the magnetic quantum number describes the
orientation of the orbital in space
the total number of orbitals present in n=3
9
which device uses electrons at high speed to bombard a target
x rays
which technology produces monochromatic light
lazers
which plastic can be recycled in sault ste marie
number 1 and 2 lowdensity polyethene
whats another name for teflon
polytetraflouroethene
what do the two numbers represent after nylon
the first number represents the amino acid adn the sescond number represents the carboxylic acid
cross linking happens by adding which molecules
sulfur
plasticizer that causes issues with health
pthalate
how do you harden natural rubber in tires
vulcanization
what is polyproplyene made for
ropes
fats and oils are
insoluble in water unsaturated hydrocarbons kink and have a higher meltign pt
what are esters made from
the oxidaation of aldehydes
alcohol and carboxylic acid
aldehydes vs ketones
ketones are in the middle of molecules and aldehydes are on the end
carboxylic acids
very polar very soluble in water soluble in alcohol
esters
less polar than carboxylic acids and do not haeve hydrogen bonds they are les soluble and have lower boiling points
thiols
have strong odours
what smells like bananas
ethsters
alkenes
the closer atoms pack together the higher the mp and bp highly reactive
alkynes
insoluble in water low bp and mp are less dense than water even more reactive than alkenes
aeromatic hydrocarbons
chemically stable liquids at rm temp insoluble in water nonpolar less reactive than alkenes
