What can help ice melt slower?

Question

I'm freezing ice cubes to fill up my cooler. What can I do to make it stop slower? Is it true that if I put salt in the water before it freezes it'll slow the melting process?

Answer 1

Yes it is true indeed. However water will need much lower temperature to solidify once salt has been added to it. I think salt is a good idea as it doesnt causes much problems.  

Answer 2

yes salt would work

Answer 3

Salt will lower the freezing point.

More insulation will slow the rate of melting.

Answer 4

yes, you could put salt in the water because salt ice has a higher melting/freezing point, so it takes longer for it to melt.

Answer 5

Adding salt can increase the melting point of ice thus slow the rate for ice to melt. I suggest you put the salt after you freeze the ice because putting the salt in the water before freezing make it take a longer time to freeze