combustion
Combustion usually releases heat and often light. This topic is part of Chemistry within Science & Nature. This page currently draws on 30 supporting questions, with answers and bonus facts available below.
combustion trivia questions
Combustion is a chemical reaction commonly known as what?
Answer: Burning
Bonus fact: Combustion usually releases heat and often light.
Combustion usually requires fuel and what gas?
Answer: Oxygen
Bonus fact: Oxygen supports most familiar forms of combustion.
Incomplete combustion of carbon-based fuels can produce what poisonous gas?
Answer: Carbon monoxide
Bonus fact: Carbon monoxide forms when carbon does not fully oxidize to carbon dioxide.
In a fire-tube boiler, hot combustion gases pass through tubes surrounded by what?
Answer: Water
Bonus fact: Fire-tube boilers route hot gases through tubes immersed in water.
What is the minimum temperature at which a material can ignite and sustain combustion called?
Answer: Ignition temperature
Bonus fact: A substance must reach its ignition temperature for sustained burning to begin.
A blue gas flame usually indicates more complete combustion than what color flame?
Answer: Yellow
Bonus fact: Yellow flames often contain glowing soot particles produced by less complete combustion.
In an internal combustion engine, what connects a piston to the crankshaft?
Answer: Connecting rod
Bonus fact: The connecting rod transfers piston motion.
An internal combustion engine burns fuel where?
Answer: Inside the engine
Bonus fact: Combustion occurs within the engine's cylinders or chambers.
A hybrid vehicle combines an internal combustion engine with what?
Answer: Electric motor
Bonus fact: Hybrid systems use two power sources.
Coal combustion releases more carbon dioxide per unit energy than which commonly used fossil fuel?
Answer: Natural gas
Bonus fact: Natural gas has a higher hydrogen-to-carbon ratio.
What solid waste remains after coal combustion?
Answer: Ash
Bonus fact: Coal ash can contain trace metals and requires management.
Which gas from fossil-fuel combustion is the largest human contributor to current global warming?
Answer: Carbon dioxide
Bonus fact: CO2 accumulates in the atmosphere and traps additional heat.