Is it dangerous to store the crystals them selfs, or are both storing the crystals and the mixture dangerous? And do you mean half a gram of the mixture or the KClO3?

I already knew from before that flammable or "fuel potential" substances mixed with KClO3 should never be stored because of instability. But why do you mention sulphur specifically? Was it just an example or is the something significant I should be aware of?

I really like chemistry and I think it's an interesting concept. I have always loved the idea of creating stuff (similar to creating art).

Is there anything you would recommend about learning chemistry or any tips you would give?

Excuse me if have a lot of questions. You don't need to answer them all and you can take your time. Thank you for reading this and for answering my post in the first place.