Question

You place a glass beaker of water on a stand over a glass alcohol burner, and light the burner. The combustion reaction combines ethanol and oxygen to produce carbon dioxide, water, and energy. The water in the beaker starts to boil. For the physical system including the alcohol, the water, and the surrounding air (ignore the beaker, the stand, the burner etc.) what energy systems are changing?

a) Ebond, ethanol, E bond, air, Ethermal, water, E thermal, air

b) Ebond, ethanol, E bond, water, Ebond, air, E thermal, waterthermalal, air

c) E bond, ethanol, Ebond, water, E thermal, water

d) E bond, ethanol, E bond, water

Answer 1

The following energy systems are changing -

Answer: b) E-bond, ethanol.   E-bond, water.   E-bond, air.   E-thermal, water. E-thermal, air.