What is the main chemical component present on the rubbing surface of a…

Concept

A safety match works by keeping the fuel on the striking strip separate from the oxidizer in the match head.

Friction brings small amounts of these materials together and supplies the initial heat needed for ignition.

Application

The rubbing surface of a safety-match box contains red phosphorus mixed with abrasive material and binder. When the match is struck, friction initiates the phosphorus reaction; the resulting heat activates the potassium chlorate in the match head and the flame develops.

Contrast

• Potassium chlorate is the oxidizer in the match head rather than the principal reactive material on the rubbing strip.

• Red phosphorus is the friction-sensitive material placed on the rubbing strip.

• Graphite is a form of carbon known for conductivity and lubrication, not the ignition role of the safety-match striker.

• The combined-response claim does not describe the safety match’s separation of striker fuel and head oxidizer.

• The none-response claim overlooks the listed substance used on the rubbing strip.

Result

Therefore, the intended answer is phosphorus, specifically red phosphorus.