Boiling

Boiling is the process in which a liquid turns into vapor when it is heated to its boiling point. It occurs when the vapor pressure of the liquid equals the atmospheric pressure. The boiling point of a substance is the temperature at which it changes from a liquid to a gas. This process is an important part of the water cycle, as it is responsible for the formation of clouds and rain.

Factors Affecting Boiling

1. Atmospheric Pressure: The boiling point of a liquid decreases with a decrease in atmospheric pressure and increases with an increase in atmospheric pressure.
2. Type of Liquid: Different liquids have different boiling points. For example, water boils at 100°C (212°F) at sea level, while the boiling point of ethanol is 78.37°C (173.07°F) at sea level.
3. Heating Source: The intensity of the heating source affects the rate at which a liquid boils.

Study Guide

To study the concept of boiling effectively, follow these steps:

1. Understand the definition of boiling.
2. Learn about the factors that affect the boiling point of a liquid.
3. Conduct experiments to observe the boiling process under different atmospheric pressures and with different liquids.
4. Use a thermometer to measure the boiling points of various liquids.
5. Explore the applications of boiling in everyday life, such as in cooking and the generation of steam for power plants.

By following this study guide, you can gain a comprehensive understanding of the concept of boiling and its practical implications.