Question

question select all the correct answers. which observations show that a change in state of matter has occurred? wood burns, producing gas and an ashy residue. overnight, dew forms on the grass. an alkali indicator changes color when added to a cleaner. vinegar has a strong smell.

Explanation:

Dew formation is condensation, a physical change where water vapor (gas) turns to liquid water, indicating a state of matter change. Other options involve chemical changes (burning, indicator reaction) or are properties (smell), not state changes.

Answer:

B. Overnight, dew forms on the grass.