List four clues that suggest a chemical change is taking place, and provide an example for each.?

Answer 1

Heat=Battery acid touching your skin. It's reacting with your skin and burning it.

Smoke=Cigarette burning. The leaves are burning up and turning into ashes.

Pressure=Put water in a jar. Close the lid tightly. Place in freezer. The water molecules begin to move rapidly causing the water to start freezing and expand. The jar breaks.

Light=Burn some magnesium ribbon. It glows very brightyly.