Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta

gcse chemistry coursework watch

    • Thread Starter

    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


    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.
    • Thread Starter


    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
Do you agree with the proposed ban on plastic straws and cotton buds?
Useful resources

Study tools


Essay expert

Learn to write like a pro with our ultimate essay guide.

Thinking about uni already?

Thinking about uni already?

See where you can apply with our uni match tool

Student chat

Ask a question

Chat to other GCSE students and get your study questions answered.


Make study resources

Create all the resources you need to get the grades.


Create your own Study Plan

Organise all your homework and exams so you never miss another deadline.

Resources by subject

From flashcards to mind maps; there's everything you need for all of your GCSE subjects.


Find past papers

100s of GCSE past papers for all your subjects at your fingertips.

Help out other students

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.