This week we continue to spend quality time with gases, more deeply investigating some principles regarding pressure - including John Dalton's Law of Partial Pressures, vapor pressure - and demonstrating the method for collecting gas over water. Table of Contents Theory of the Atom 1:48 Adding up the Pressures 2:34 Mixing Vinegar & Baking Soda 7:15 Collecting Gas Over Water 8:54 -- Want to find Crash Course elsewhere on the internet? Facebook - www.facebook.com/YouTubeCrashC... Twitter - www.twitter.com/TheCrashCourse Tumblr - thecrashcourse.tumblr.com Support CrashCourse on Subbable: subbable.com/crashcourse