This is how you can make your own liquid nitrogen substitute (getting close to -109 °F ). The result is allowing you to totally super freeze and shatter things like watermelons! Thank you tjsmith for being my chief smashing officer - - - - #science #sciences #scienceart #sciencefacts #edu #educational #education #stem #steam #chemistry #chem #chemicals  #youtube #youtuber #youtubers #video #videos #experiment #experiments #nickuhas #nickipedia #freeze #watermelon #liquidnitrogen #hack