chem paper 1 Flashcards
(36 cards)
avogadro’s constant
6.02 x 10^23
avogadro constant meaning
the number of entities in one mole
reactivity series
please stop calling me a crazy zebra instead try learning how copper saves gold pellets
nanoparticle characteristics
long empirical formula method
1) calculate the moles for each element
2) divide both moles by the smallest one
3) round answers to whole numbers
4) turn into a ratio
5) turn into formula
gas chromatography
tlc
history of atomic model
dalton - solid spheres
jj thompson - plum pudding model, electrons (solid) cathode ray
rutherford/geiger/marsden - shot positive alpha particles at gold leaf and measured angle of deflection, nucleus
bohr - electron shells
chadwick - neutrons
inert vs non inert electrodes
inert - don’t react, platinum, gold, graphite
non-inert - participate in reaction, copper, iron
cathode vs anode
electrolysis - cathode is negative, anode is positive
electroplating - cathode is object getting coated, anode is material
redox - anode is oxidation, cathode is reduction
concentrated vs dilute
strong vs weak
positive ions to know
negative ions to know
history of periodic table
mendeleev - ordered by atomic mass, grouped elements with similar characteristics, left gaps, and swapped around a few elements unknowingly ordered them by atomic number
sensitive meaning
accurate meaning
precise meaning
characteristics of particle model
product at anode vs at cathode
allotropes of carbon
risk of nanoparticles in sun cream
physical property vs chemical property meaning
limitations of different models
