Notesale: Turn your study into money

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Exothermic  and  Endothermic  Uses  
 
Name:  

Advantage  /  Disadvantage  

 
 

Advantage  

Disadvantage  

Chemical  
Hand  and  
Body  
Warmers  

Also  can  be  
used  for  easing  
aches  and  
pains,  Lasts  for  
30  mins  and  
produces  
instant  heat  

Sometimes  only  
works  once,  
Hard  to  activate  
sometimes  and  
Small  so  easy  to  
use  

Instant,  Can  last  
Self-­‐Heating   for  a  while  and  
Cans  
Keeps  your  
coffee  

Cold  Packs  

Last  for  20  
mins,  can  help  
with  bruises  or  
bumps  and  are  
instant  

Isn’t  reusable,  
Cost  loads  to  
make  and  Hard  
to  find  In  any  
shops  
Instant  ones  
can’t  be  
reusable,  
Reusable  ones  
aren’t  instant  
and  Get  wet  
from  
condensation    

Diagram  

Is  It  
Reusable  

Exothermic  or  
Endothermic  

 

 

 

Some  are  but  
some  aren’t    

Exothermic  

They  are  not  
reusable    

Exothermic  

Instant  aren’t  
reusable  and  
non-­‐instant  
ones  are  
reusable  

Endothermic  

 
 

 

 
 
How  They  Work:  
 
Chemical  Hand  
and  Body  
Warmers  
Self-­‐Heating  
Cups  
Cold  Pack  

 

You  click  a  metal  tab  and  the  liquid  reacts  with  the  clicking  creating  a  solid  object  
which  lets  out  heat
...
   
You  click  a  button  and  that  releases  calcium  oxide  into  water  which  causing  a  
reaction  of  calcium  hydroxide  releasing  heat  from  the  reaction  
The  liquid  in  the  ice  pack  is  frozen  in  a  freezer  and  then  melts  on  your  body  over  
time  yet  takes  a  while  



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