Question

when wood burns in a fire, ash is left behind. which indication of change does the ash demonstrate? the temperature drops considerably. the absorption of light. the production of a solid residue.

Explanation:

When wood burns, it undergoes a chemical change. Ash is a solid residue formed as a result of this chemical reaction. The temperature drop and light - absorption are not the main indications related to the ash. The key here is the formation of a new solid substance (ash) from the wood.

Answer:

The production of a solid residue.