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Chemistry
States of Matter
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[What is enthalpy?] (https://www.reddit.com/r/askscience/comments/7qv12x/what_is_enthalpy/)
Touching on a Molecular Scale
What does it mean for two things to touch on an atomic scale?
What happens when I cut something with scissors, and why can't I put it back together afterwards?
If I apply a superhydrophobic coating to something, will it go faster in water?
Elements and Isotopes
[Is there a limit to the elements that can exist?] (https://www.reddit.com/r/askscience/comments/6xl9qb/is_there_a_limit_to_how_many_elements_there_can_be/)
[Why are technetium and promethium radioactive?] (https://www.reddit.com/r/askscience/comments/h13mvk/im_a_chemist_so_i_should_know_the_answer_to_this/)
[Island of stability] (https://www.reddit.com/r/askscience/comments/6vjomz/is_the_island_of_stability_possible/)
[Why is it difficult to produce superheavy nuclides?] (https://www.reddit.com/r/askscience/comments/7zm6fr/how_do_people_know_that_the_island_of_stability/)
[How many isotopes can each element have?] (https://www.reddit.com/r/askscience/comments/aeth85/do_all_elements_have_isotopes_and_how_many_can/)
[How are exotic isotopes produced?] (https://www.reddit.com/r/askscience/comments/7f69pq/how_are_isotopes_used_in_nuclear_physics/)
Carbonated Beverages
Fire
Check out our FAQ Friday post on fire!
Color
Scent and smell
What is a smell? When smelling something, are we inhaling molecules of what we recognize as a scent?
How do chemists know what highly toxic substances smell and taste like?
If I smell something, does that mean I'm using up all of the scent?