Question

Hello Guys
Please Answer My Question and do not send the answers from Google..
1 ............. is a compound present in the head of a matchstick.

2 The substance that burn in the presence of oxygen to produce heat and light are called.............. combustible substances.

3 Burning of which fuel helps to run our body?

please please answer these questions..​

Answer 1

Answer:

1]Phosphorous sulfide is the chemical compound that ignites match heads. It's found in the heads of strike-anywhere matches and in the strip on the side of safety match boxes. Other ingredients of match heads include potassium chlorate, phosphorous sesquisulfide, sulfur, glass powder, binders and fillers.

2]Combustible substances Non combustible substances

Combustible substances are those which readily burn in the presence of air or oxygen to produce heat and light. Non-combustible substances are those which do not readily burn in the presence of air or oxygen to produce heat and light.

3]Our bodies burn a blend of fuel for energy needs: stored carbohydrate (referred to as glycogen) and stored fat. A pound of body fat contains 3,500 calories, more than enough to run a marathon, so we have plenty of energy on board.

Explanation: