Section 2 Flashcards
What is a wavelength?
Distance between a point on a wave and the corresponding point on the next crest, measure in metres etc
What is amplitude?
The height of the crest of the wave (depth of trough)
Plancks constant
h= 6.626 x10^-34 J^-s
Speed
c = 3x10^8 ms^-1
T/F - Electrons can only have certain amounts of energy in an atom
True! If more energy they require more work in the atom
Ground state? N=?
Orbit closest to the nucleus, n=1
Excited state? N=?
Electron in 2nd or higher orbit, n=2+
Absorption
When the electron moves from a lower level to a higher excites state
Emission
When the atoms have been excited at a higher energy photons as their electrons return to their groundstate
Quantum mechanics
Wave nature of objects at the smallest scales
What is wavelike duality
Particle have wave-like properties and energy has particle-like properties
What does diamagnetic mean?
Atoms with pairing electrons are not attracted to the magnetic field
Atoms with unpaired electrons are attracted to the magnetic field, what are they called?
Paramagnetic
Ionisation energy is?
Energy required to lose mole of electron from 1 mole of gaseous ion/atom
What are chemicals bonds
Forces that hold together ions/atoms
