for chem heres some quickies
copper (ii) - blue
iron (ii) - green, dirty
iron (iii) - reddish brown
REMEMBER! NO MARKS FOR missing out on the (ii) and (iii)
the rest are all colourless
anything for anion + barium nitrate is sulphate
remember the ppt doesn't contain the cation itself
fermentation is yeast + sugar
alocohol + carboxylic acid = esterification
potassium dichromate (vi) is a oxidising agent, it is proved when
it changes colour from orange to green
potassium iodide is a reducing agent, changes from colourless to
brown
ammonia is the only gas we learn i think, anything + sodium
hydroxide and they ask wat gas formed is ammonia gas
catalyst best works at 37 because anything above 39 damages the
catalytic property thus slows down reaction
reactivity series
P - Potassium
S - Sodium
C - Calcium
M - Magnesium
A - Aluminium
Z - Zinc
I - Iodine
T - Tin
L - Lead
C - Copper
Silver
Gold
I memorise as
Pop
Singer
Can
Make
All
Zombies
In
Town
Lose
Calm
general formula for alkane - CnH2n+2, Alkene - CnH2n
Alcohol --> Carboxylic Acid = Oxidation
Alcohol + Oxygen --> Carbon Dioxide + water = Combustion
Only Alkenes undergo addition, Alkane undergo substituition with
chlorine
Alkene +hydrogen/bromine/chlorine/water = addition
