testing for +ve and -ve ions

POSITIVE

flame tests
lithium - bright red
calcium - brick red
barium - green
sodium - golden yellow
potassium - lilac

add sodium hydroxide
magnesium - white precipitate
aluminium - white precipitate, dissolves in excess
calcium - white precipitate
ammonium - ammonia gas and water produced
copper - blue precipitate
iron II - dirty green precipitate
iron III - reddy brown precipitate

NEGATIVE

sulphates
add hydrochloric acid and then barium chloride -> white precipitate

nitrates
add sodium hydroxide and aluminium powder -> ammonia gas

halides
add nitric acid and silver nitrate:
iodide - yellow precipitate
chloride - white precipitate
bromide - cream precipitate

carbonates
add hydrochloric acid, CO2 produced:
zinc - turns yellow when heated
copper - turns black when heated

now if anyone ever needs any ions identifying, be they positive or negative, don’t hesitate to call me. i know how often people need ions identifying.

hey hey hey.

i’m actually blogging from downstairs for the first time ever. weird feeling, i’m usually in my bedroom. it’s good to be home alone. only for another 2 hours though. i’ve actually managed to do a whole load of chemistry, pretty pleased with that. just one topic left, have to learn all the colours for the ion identification tests :| actually… i think i might know some already?

flame tests:
potassium - lilac
sodium - golden yellow
lithium - red

umm. i should probably go learn them. in a bit guyyyys.

revision break song: http://www.youtube.com/watch?v=1-pUaogoX5o

p.s. the weather today is ferocious… apparently the wind is like, 70mph? i’m thinking of building an ark soon tbh :|

i showered :O

someone get me a medal or something?

so, avril lavigne’s released a new song, ‘smile’. she’s 26 now, but still partying hard like she was 10 years ago… gotta admire that enthusiasm and energy. but i did think her music would mature a little bit - “you know that i’m a crazy bitch, i do what i want when i feel like it” :P ah well. i’m starting my chemistry unit 3 revision now. wooh, a subject i actually like!

SEE YA.

studying physics, and i’m like

okay. i’m off tumblr again. slight change of plan since i’ve not quite finished the whole unit. i need to do 2 more topics, Electromagnetism and Stars, then i can hit the past papers. i lead such a crazy life :’)

the dreaded footsteps.

so my mother has discovered that i am still awake. scary stuff. i mean i am actually studying, so i told her, i was all

like, HOW CAN YOU SHOUT AT ME FOR STUDYING. but (lol, i’m so innocent right) i guess i’ll have to put my laptop away now :( but hey, i did get some great chemistry done. see you tomorrow! unit 3 chemistry and physics, here i come. planning on doing some tumblr revision again since it seemed to help ;) night night xo

p.s. EW THERE’S A MOTH DIE DIE DIE

wanna help me come up with a fun way to learn how to spell phenophthalein?

p
h
e
n
o
p
h
t
h
a
l
e
i
n

suggestions?

b3 is in da bag

hahahahhaa not.