/oss/taxonomy/term/2685/all en /oss/article/did-you-know/why-dont-ice-cream-sandwiches-melt <p>Walmart recently came under fire for their ice cream sandwiches, because they apparently do not melt. People <a href="https://www.youtube.com/watch?v=SozZHZAWS64">flocked to YouTube</a> to document their ‘unmelting’ desserts, claiming that their solid state must be proof of dangerous chemicals and preservatives used in their manufacturing process. So really: why don't ice cream sandwiches melt?</p> Tue, 23 Jan 2018 03:18:47 +0000 Ada McVean B.Sc. 6899 at /oss /oss/article/you-asked/salt-used-melt-ice-it-also-used-make-ice-cream-why <p><a href="http://blogs.mcgill.ca/oss/2013/05/23/why-is-it-that-in-hot-countries-we-put-salt-on-ice-in-the-ice-cream-makers-to-keep-the-ice-from-melting-while-in-cold-countries-we-put-salt-on-ice-to-melt-the-ice/ice-cream/" rel="attachment wp-att-5293"></a> <em><strong>Why is it that in hot countries we put salt on ice in the ice cream makers to keep the ice from melting, while in cold countries we put salt on ice to melt it?</strong></em> In both cases, the answer is based on the fact that adding salt to an ice water mixture in equilibrium, lowers the freezing point (or melting point)  of the equilibrium. <a href="http://blogs.mcgill.ca/oss/2013/05/15/why-is-it-that-in-hot-countries-we-put-salt-on-ice-in-the-ice-cream-makers-to-keep-the-ice-from-melting-while-in-cold-countries-we-put-salt-on-ice-to-melt-the-ice/">Read more</a></p> Thu, 23 May 2013 13:00:08 +0000 Ariel Fenster PhD 1941 at /oss