2007-06-02 03:33:30 · 4 answers · asked by Elizabeth P 1 in Science & Mathematics ➔ Chemistry
it's a chemical reaction when you change a liquid into a gas, yes
2007-06-02 03:42:34 · answer #1 · answered by jim m 7 · 0⤊ 1⤋
Burning of hydrocarbons is a chemical reaction.
Incomplete burning in an internal combustion engine produces many pollutants such as CO2, CO, and nitrogen oxides, because the nitogen from the air was compressed in the engin also and forced to combine with the oxygen.
These cause acid rain. and smog.
lead that used to be used in gasoline was a pillutant and poison.
Now the additives they are usingare also pollutants such as MTBE getting into water suplies.
Fractional distillation of crude would be a physical reaction, but cracking to get more gasoline is chemical.
2007-06-02 11:01:06 · answer #2 · answered by science teacher 7 · 0⤊ 1⤋
Gasoline and misc. additives react with Oxygen to produce bunches of Hydrocarbons wich would (probably) break down into Carbon Dioxide and Water in the Atmosphere but that usually gets done by the time the nasties get to the tail pipe thanks to the Catalytic Converter. That's why you see water dripping out of the tail pipe, rusting away you exhaust system and keeping Midas and CarX in business.
Get an "A".
2007-06-02 21:50:37 · answer #3 · answered by teachr 5 · 0⤊ 1⤋
How are they -not- would be a much shorter answer âº
The combustion of hydrocarbons (and the by-products of that compustion) is a very complex chemical reaction that depends on pressure, temperaturs, gas-air mix ratio, and a bunch of other things.
Doug
2007-06-02 10:39:32 · answer #4 · answered by doug_donaghue 7 · 0⤊ 1⤋