Let's talk about patriotism

copied from https://www.youtube.com/watch?v=Hvds2AIiWLA

copied from https://www.youtube.com/watch?v=HAEdoA74ZCE

copied from https://www.youtube.com/watch?v=GSPlvm9SnaY

What do you agree with?

What's the Difference between an Atom and a Molecule?

copied from http://socratic.org/chemistry/bonding-basics/bonding/whats-the-difference-between-an-atom-and-a-molecule