Describe the chemical reaction that happens in:

a match head:

When you light a match, there is a quick set of chemical reactions that occurs. In a match head there is animal glue, sulphur and potassium chlorate. The striking board is made of ground up glass and red phosphorus. First the friction between the match head and ground glass creates heat. This sets of a chemical reaction between the phosphorus on the board and potassium in the head. The heats from this ignites the fuel in the head. As the fuel burns the practicals change that’s why it is a chemical reaction. This than sets the wood alight (another chemical reaction.)

a sparkler

When a sparkler is heated, these oxidizer compounds decompose, and when they do so they all, regardless of their identity, produce oxygen as one of the products of the decomposition. The production of gases during the decomposition reaction also forcibly ejects bits of the burning powdered metal from the sparkler.

an airbag

In the airbag the main chemical in the heart of the airbag is Sodium Aside (NaN3). As soon as intron gas is released, the airbag inflates.

There are sensors in the front of the car that detect a collision. These sensors send an electric signal to the canister that contains the sodium aside and the electric signal detonates a small amount of an igniter compound. The heat from this ignition starts the decomposition of the sodium aside and the generation of nitrogen gas to fill the air bag. It takes about 0.3 seconds to inflate.