🔍 Key Concepts

• Volatility deals with how easily a liquid produces vapors at a given temperature • Flash point is the lowest temperature at which a liquid gives off enough vapor to ignite momentarily • Ignition temperature is the temperature at which the vapor-air mixture will continue to burn once ignited

💭 Think About

• Ask yourself: which option directly describes how readily a liquid turns into vapor that can form a flammable mixture with air? • Which property is commonly used on Safety Data Sheets (SDS) and cargo documentation to compare how easily different liquids can catch fire at normal temperatures? • Which of these terms is specifically a temperature threshold where enough vapor is present to briefly ignite when given a spark or flame?

✅ Before You Answer

• Verify which choice is a measured temperature property commonly listed for fuels like gasoline, diesel, and jet fuel • Confirm which definition is about the start of vapor ignition rather than sustained burning • Eliminate any option that mainly describes how wide the burnable mixture range is rather than how easily vapors are produced