Materials: A clean dry transparent glass jar (e. g., a jam bottle or a bigger bottle) Warm water Ice cubes Metal lid or a piece of metal (tray) to cover the mouth of the bottle.

steps : Fill a jar with 2 inches (5 cm) of warm water and stir. Then light a match, blow it out and quickly drop it into the jar. Immediately place an ice-filled metal tray or metal lid with ice on rop. Observe what happened for a couple of minutes. Lift the metal lid off the mouth of the Jar and observe what happens.

Questions:

(1) Why did you fill the jar with warm water and not cold water?

(2) What is the purpose of dropping a match that gives out smoke? What other materials can you use instead of a match?

(3) What is the purpose of placing a metal lid or tray with ice on top?

(4) What did you see inside the jar after a couple of minutes? Explain what happened inside the jar

(5) If the experiment were repeated. without a match producing smoke what would you expect to see? No thick cloud​