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Chapter 11: Problem 144

A student heated a beaker of cold water (on a tripod) with a Bunsen burner. When the gas is ignited, she noticed that there was water condensed on the outside of the beaker. Explain what happened.

Short Answer

Expert verified
The water condensed on the outside of the beaker because of the process of condensation. When the water in the beaker was heated, it evaporated into a gaseous state but when it came into contact with the cooler surface of the beaker, it converted back into its liquid state causing condensation on the outside of the beaker.

Step by step solution

01

Understanding the process of heating

First, comprehend the procedure; when the cold water in the beaker was heated, it gained energy which caused the water molecules to move quickly, thereby increasing the temperature.
02

Process of Evaporation

When the temperature rose, the water molecules gained enough energy to change from liquid state to gaseous state. This change of state from liquid to gas is called evaporation.
03

Process of Condensation

The evaporated water, now as water vapour, comes into contact with the cooler surface of the beaker. This causes the water vapour to lose its energy and revert back to its liquid state. This change of state from gas to liquid is called condensation which causes water to gather on the outside of the beaker.

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