system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is a flame made of?

Tonight I spent hours looking at my open fire (I don't have a TV) and I wondered what a flame really is and how it comes to be.
gpt
Really really hot gases, hot enough that they're giving out visible light. It is believed that the heat tears apart electrons from their atoms in the flame, resulting in a plasma state, but this is still widely debated.