to observe a property of a substance, the substance must interact with another substance, such as when…

to observe a property of a substance, the substance must interact with another substance, such as when gasoline when sodium metal reacts with water. chemical physical electrical thermal

to observe a property of a substance, the substance must interact with another substance, such as when gasoline when sodium metal reacts with water. chemical physical electrical thermal

Answer

Brief Explanations:

A chemical property is observed when a substance interacts with another substance and a chemical change occurs. Examples given like gasoline reacting or sodium metal reacting with water are chemical reactions. Physical properties can be observed without changing the substance's chemical identity. Electrical and thermal are types of physical - related properties in some contexts but not relevant here as the focus is on the interaction causing a chemical change.

Answer:

chemical