What do these two changes have in common

Question

Burning food on a stove
An engine using gasoline to power a car
Select all that apply
Both are only physical changes
Both are caused by cooling
Both are caused by heating
Both conserve mass

Answer 1

The two changes, burning food on a stove and an engine using gasoline to power a car, share the following commonalities:

1. Both are caused by heating - Both processes involve the application of heat: burning food requires heat to ignite and cook, while an engine uses heat generated by the combustion of gasoline to power the car.

2. Both conserve mass - According to the law of conservation of mass, matter is not created or destroyed in a chemical reaction. In both cases, the mass of the reactants (food and gasoline) is conserved as they undergo chemical changes.

The statements regarding "both are only physical changes" and "both are caused by cooling" do not apply in this context. Both are chemical changes, and they are not caused by cooling.