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ISA

"the amount of carbonate in an ore sample can be measured by adding hydrochloric acid to the sample until it stops fizzing"
How will I make this a fair test?

Please help me:smile:
(edited 10 years ago)
Reply 1
How would you say that in the ISA as this is the chemistry exam I got a B in last year, I got A in my exam, then in the ISA I got a C, therefore I want to get the highest possible in this isa, how would you say that in the ISA as well as what others could I test to make it fair?

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