Question

"A matchstick can burn a tiny splinden of
wood but cannot burn a log of wood.Explain.​

Answer 1

Answer:

A splinter of wood has a low ignition temperature so, a burning matchstick can produce sufficient heat to attain the ignition temperature of the splinter of wood hence, a matchstick can easily light a splinter of wood

But, a log of wood has a high ignition temperature which can not be attained by the small amount of heat  produced by burning matchstick. So, a burning matchstick cannot light a log of wood directly.