Biology, 20.02.2021 17:20 bobiscool3698
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
Answers: 3
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Materials:
A clean dry transparent glass jar (e. g., a jam bottle or a bigger bottle) Warm water Ic...
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