Question

a piece of paper catches fire easily while a crumpled paper dose not. why?​

Answer 1

Explanation:

The paper by itself catches fire easily because its ignition temperature is low, while a piece of paper wrapped around an aluminum pipe does not catch fire because its ignition temperature rises. Paper by itself catches fire easily because it attains its ignition temperature .

Answer 2

Answer:

A sheet of paper falls slower then the one crumpled into a ball because the surface area of the ball is much lower than that of the sheet. Thus the upward force exerted by air on the sheet is much as compared to the one exerted on the ball. Hence the sheet falls slower.