Final answer:
Some physical properties of fuels include boiling point, flash point, density, and viscosity.
Step-by-step explanation:
Some important physical properties of fuels include:
- Boiling Point: This is the temperature at which a fuel changes from a liquid to a gas state. Example: Gasoline has a relatively low boiling point, which allows it to vaporize easily.
- Flash Point: This is the lowest temperature at which a fuel can ignite when exposed to an open flame or spark. Example: Diesel fuel has a higher flash point compared to gasoline.
- Density: This refers to the mass of a fuel per unit volume. Example: Ethanol is less dense than water.
- Viscosity: This is a measure of a fuel's resistance to flow. Example: Motor oil has a higher viscosity compared to gasoline.