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well we did this experiment at school so the teacher had bottles with what i can only describe as "stuff" inside which all had different pH levels.

ok you dont need water. So you get say 5 test tubes. Label from 1 - 5. put ten mL of the same concentration of Hydrogen peroxide in each test tube. Then choose your different pH levels say 3, 5, 7, 9 and 11. Put ten mL of each of those in the appropriate test tubes. Then one at a time put a...

you can use kidney which has the enzyme catalase in it. The substrate is the hydrogen peroxide. you then add different pH including distilled water which has a pH of 7 (neutral) time the reaction until it ceases and you should also measure the foam that is formed every minute so you are...

Re: Called up Board of Studies regarding 2 related texts or maybe.. everyone should have just read the question seeing as it said ONE in capitals

In all the past papers they have never had more than one different sort of text type. So it's always been two essays and a ..... (speech, report, interview etc) or three straight essays. And also im pretty sure that the 3rd module representation and texts will say AT LEAST one related material...

The question specified for ONE related material. They will disregard the second related material or only mark the first one mentioned. They only asked for one because they wanted to see that we could analyse another text in detail instead of two related texts superficially. Not sure about...