When lit, propane gas burns in the presence of oxygen. The outcome of this reaction is carbon dioxide gas and water vapor.

Question

Which statement about this chemical reaction is correct?

Responses

The chemical properties of the reactants and products are the same: propane and carbon dioxide are both flammable.
The chemical properties of the reactants and products are the same: propane and carbon dioxide are both flammable.

The chemical properties of the reactants and products are different: propane is a gas and water vapor is a liquid.
The chemical properties of the reactants and products are different: propane is a gas and water vapor is a liquid.

The chemical properties of the reactants and products are different: propane is flammable and carbon dioxide is not.
The chemical properties of the reactants and products are different: propane is flammable and carbon dioxide is not.

The chemical properties of the reactants and products are the same: propane and water vapor are both liquids

Answer 1

The correct statement about this chemical reaction is:

The chemical properties of the reactants and products are different: propane is flammable and carbon dioxide is not.

In this reaction, propane (C3H8) is a flammable gas, while carbon dioxide (CO2) is a gas that is not flammable. Water vapor (H2O) can exist in both liquid and gaseous forms, but it is typically considered a liquid under standard conditions. Thus, the statement correctly highlights the difference in flammability and properties of the reactants and products.