Across
- 8. Transmission or transfer of heat energy from one body to another body at lower temperature
- 9. initiation of combustion by heat but without a spark or flame
- 13. any material that readily yields oxygen or other oxidizing gas, or that readily reacts to promote or initiate combustion of combustible materials.
- 14. a material that will maintain combustion under specified environmental conditions
- 15. Reaction, a Chemical reaction between two or more materials that changes the materials and produces heat
- 16. Ignition, the moment when a mixture of fuel and oxygen encounters an external heat source which sufficient heat or thermal energy to start a combustion reaction.
- 18. Energy, energy possessed by a moving object because of its energy
- 19. Ignition, the initiation of combustion of a material by an internal chemical or biological reaction that has produced sufficient heat to ignite the material
- 20. refer to the amount of additional heat needed to raise the temperature of a substance.
- 21. physical process that changes a liquid into gaseous state
- 23. transfer of heat energy from one body to another through direct contact or an intervening medium, from the point where heat is produced to another location
Down
- 1. the result of exothermic reactions, occuring spontaneously in some materials under certain conditions.
- 2. the chemical decomposition of a solid material by heating
- 3. Energy, stored energy possessed by an object that can be released in the future to perform work once released
- 4. the capacity to perform work; occurs when a force is applied to an object over a distance, or when a substance undergoes a chemical, biological, or physical transformation
- 5. a form of energy associated with the motion of atoms or molecules within a fuel, which is transferred from one body to another as a result of a temperature difference between the bodies, such as from the sun to the earth. It is measured in degrees of temperature.
- 6. chemical process that occurs when a substance combines with an oxidizer such as oxygen in the air
- 7. transfer of heat by the movement of heated fluids or gases, usually in an upward direction
- 10. measure of the average kinetic energy of the particles in a sample of matter, expressed in terms of units or degrees.
- 11. a chemical process of oxidation that occurs at a rate fast enough to produce heat and usually light in the form of either glow or flame
- 12. a rapid oxidation process, is a gas-phase chemical reaction resulting in the evolution of light and heat in varying intensities
- 17. Reaction, a Chemical reaction in which a substance absorbs heat
- 22. point, the temperature at which liquid fuel produces sufficient vapors to support combustion once the fuel ignites