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help me create a few mnemonic devices?

I have a chem quiz tomorrow and one of the things I have to have memorized are these "equations." Can you guys help me come up with a memory trick for any of them? In the past I have used some that are just plain silly (and generally unrelated to the subject at hand.) but it still helps me remember, so if you can tell me a silly story or otherwise think of something clever for any of these seemingly random numbers and letters together. Or even if you can point out any patterns I may not have noticed (for example, I noticed that Ammonium is the only one that is positive and it is the only one without an "O" in it...)? THANK YOU!

Ammonium= NH4+1

Sulfate=SO4-2

Carbonate=CO3-2

Phosphate= PO4-3

Accetate= C2H3O2-1

Hydroxide= OH-1

Chlorate= ClO3-1

Nitrate= NO3-1

Okay, the small numbers are supposed to be subscripts and the normal sized numbers are supposed to be superscripts...yeah.

sulfate, only one with S and ate=eight sooo 4x2=8!! haha.
Silly I know...

Phosphate, only one with a P

Clorate has C and L
while Carbonate is CO... has 3 syllables, but only 2 without the -ate.

I'm not sure... lol....

Hydro... is  Ohh!!

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sulfate, only one with S and ate=eight sooo 4x2=8!! haha.
Silly I know...

Clorate has C and L
while Carbonate is CO... has 3 syllables, but only 2 without the -ate.

both of theses are especially perfect!

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Accetate= C2H3O2-1

acetate makes me think of acetone, like in nail polish remover (related, I guess). the smell of that stuff makes me CHOke, so -1 for that. 

nitrate is NOOO because you don't want it in your water.

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Ammonium comes to the plate; Nearly Hits!! 4 fouls + 1 strike

Nitrate (the irate nanny) = NO say the 3 kids!! -1 for the nanny

OH! Hydroxide cried, missing his 1

Poor Phosphate, got hassled by the PO-PO 4 times last week, and carried off 3.

Okay, that's it for now....

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oh, guys, these are all good. Way to go! Thank you! :)>>>

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Just so you know, I was thinking about these last night for you but couldn't think of any. I did, however, have an aweful dream in which I was not prepared for your quiz!

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How'd the test go?

Just so you know, I was thinking about these last night for you but couldn't think of any. I did, however, have an aweful dream in which I was not prepared for your quiz!

This is funny!

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I think it went pretty well, all these stories really helped! In fact, they helped so much that the second I got my quiz, I just found all the ones I knew, wrote in the equation (while quoting stories to myself in my head ::) about PO PO and sulfATE ate=eight for four times two, etc, etc...) lol yeah then I went back and figured out the other parts.  :P

Thanks guys, and sorry for any unpleasant dreams I may have stirred up! :)>>>

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