Mystery #3Tier 2chemistry / reactions
Why do things burn?
A log sits there doing nothing for years, but touch it with a flame and it bursts into fire, giving off heat and light until there's almost nothing left. What is fire, and why does burning need a flame to start?
Your guess
What's your hunch about what's happening when something burns?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.