This is an exercise to provide feedback on how to raise the quality of posts on the site.
A perfectly uniform standard of what posts are considered acceptable is not expected, but it would be nice to avoid unnecessary to-and-fro (closing/opening), particularly where it involves well-meaning OPs who've taken the time to write relatively thoughtful posts (and who will undoubtedly be turned off by a hostile reception), or closing of posts which require minor improvements.
It is my opinion that if you downvote or vote to close, you should try to comment. If you perceive an OP has made an effort to post a reasonable and interesting question (even if you might not think it's the worlds best) but don't think it's good enough but could be improved so as to fit, then you should be considerate and if possible take a minute or even less to write why the post is a bad fit or - even better- how it can be improved. If you are confused by the question it helps to comment "I don't understand the question, this-is-why." I tip my hat to those who regularly comment, even if critically, their contributions make this site better.
Having said that, I would like to present an exercise in the spirit of attempting to help new OPs fit in and ask what the community feels are good questions:
Q: How are compounds within a complicated mixture detected?
CodyBugstein: I was reading an article about an independent pharmaceutical watchdog group called Valisure which recently released a report stating that they found Benzene, a toxic substance, in many bottles of consumer sunscreen. (Full report here: valisure.com/blog/…...
This is about to get closed if it hasn't been already. It is a reasonable question although the OP is not a chemist and has made it way too broad. I think it would be a nice fit if narrowed, but if made too narrow ("How is benzene in sunscreen detected?") it also risks summoning the ire of the community.
How to edit this to fit?
Here's another one:
Q: Why would a mixture of sucrose, propionic acid, sodium formate, and agar turn light blue? What reaction is happening?
Daniel L: I made 3 mixtures which had 1 M sucrose, 1% w/v agar, .68% v/v propionic acid, and EITHER 0%, 4%, or 13% w/v sodium formate salt. It was NOT blue at first, but after a couple hours at RT, the 0% sodium formate mixture was clear, the 4% mixture was barely blue, and the 13% was light blue. I'm wond...
Another one on fast track to being closed, and also imho very interesting (the general explanation is perhaps straightforward, but the details are potentially very interesting). How could this be improved?
Finally here's another one by an OP with an apparent sense of humor:
Q: Finding out the composition of a sample in analytical chemistry without knowing what to test for
forgodsakehold: I am little new to analytical chemistry, but after reading up on it, I realised that most analytical procedures need you to know what to test for beforehand. May I know, given a sample of material G, is it possible to know its composition without knowing beforehand what to test for? ie. ......
This one again is too broad, but here there is less to chew on in the absence of any clear examples (such as in the Qs above) which might lead to a request for minor changes. The OP is seeking guidance somewhat blindly.
Can this be rescued, if so how?
I've presented three examples of posts on the path to closure. Since comments are not available, I am seeking feedback on what makes these worthy of closure, and what can or cannot be done to rescue them.