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gcse chemistry coursework watch

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    Help I am stuck on my chemistry coursework on cold packs- Hypothesis says amount of water added to ammonium nitrate affects how cold a pack becomes. WHy? how can i come up with a prediction
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    Hiya,

    If you research the effect of amount of ammonium nitrate on the coldness, then use the "answer" to write your prediction. If I remember rightly from last year you have to write something along the lines of 'if I change the ..... then the ..... will increases/decrease'. If you have a look at past ISA mark schemes you will be able to find the exact wording needed for full marks.
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    hi

    would you be able to email me please.

    I have so far found "the less water added the greater the temperatire change because of endothermic reactipon as it taking heat out of the water!

    IS this right? what else could i add to get more mark.

    Also what should the graph look like-help please
 
 
 
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