Question

Inside an engine, gasoline combines with a spark to create combustion which in turn spins the wheels and moves the vehicle. Which parts of this process make the chemical reaction system?(1 point)
Responses

The gasoline and spark
The gasoline and spark

All parts combined
All parts combined

The wheels and the road
The wheels and the road

The engine and wheels

Answer 1

The gasoline and spark

Reason: the chemical reaction (combustion) involves the fuel (gasoline) and the activation energy from the spark (and oxygen in the air). The wheels/road or engine/wheels are not part of the chemical reaction itself.