Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Grease exposed to pure oxygen can explode:

In a pure oxygen environment, oxidation happens much more vigorously than in normal air. Grease is a hydrocarbon fuel, so when the surrounding oxygen level is extremely high, the grease can ignite more easily and burn much faster. If the combustion occurs in a confined space, the rapid heat release can build pressure quickly enough to cause an explosion, not just a flame. So grease exposed to pure oxygen can explode under the right conditions. The idea that it would only explode if heated or only if compressed isn’t the defining point here—the sheer presence of pure oxygen makes the hazard real, even without additional heating or high pressure, though heat or confinement can intensify it.

In a pure oxygen environment, oxidation happens much more vigorously than in normal air. Grease is a hydrocarbon fuel, so when the surrounding oxygen level is extremely high, the grease can ignite more easily and burn much faster. If the combustion occurs in a confined space, the rapid heat release can build pressure quickly enough to cause an explosion, not just a flame. So grease exposed to pure oxygen can explode under the right conditions. The idea that it would only explode if heated or only if compressed isn’t the defining point here—the sheer presence of pure oxygen makes the hazard real, even without additional heating or high pressure, though heat or confinement can intensify it.