Welp Flashcards
S process
Slow process
neutron capture
—> then beta decay if unstable
—> After red giant
R process
Rapid process
Supernova causes lots of neutron capture then decay extremely quickly
Nucleosynthesis
ex) The process in which hydrogen collides into one another, causing nuclear fusion and creating helium.
just general process of creating new atoms from combining existing ones.
Significant figures
he number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.
When measuring, guess one additional value after the sure one
Histogram
Change over time
Bar graph
Different bars for different variables
nonpolar covalent
below 0.4 electronegativity difference
polar covalent
0.4 to 1.8 electronegative difference
ionic bond
above 1.8 electronegativity difference
London dispersion force
Random electrons becoming crowded in one side so dipole momentarily forms there.
Dipole Dipole force
attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.
Ion dipole force
attractive force that results from the electrostatic attraction between an ion and a neutral molecule that has a dipole.
hydrogen bonds
extra strong dipole dipole forces where molecules + F O or N.
Linear VSEPR
1 or 2 charge centres 180 degrees
Trigonal Planar VSEPR
3 centres, 120 degrees
bent <120
Tetrahedral VSEPR
4 centres 109.5 degrees
trigonal pyramidal <109.5
bent«109.5
energy and frequency
E=hν
E is energy
V is frequency
λ is wavelength
C=λv
C=λv
E is energy
V is frequency
λ is wavelength
