Boiling

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/boiling

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the key thermodynamic property?Latent heat of vaporization, the energy required for phase change
2. What is the influencing factors?Ambient pressure and dissolved solute concentration
3. What happens when water starts to boil?When water reaches its boiling point, vapor bubbles form inside the liquid because its vapor pressure equals the surrounding pressure.
4. Why does water boil at a lower temperature on mountains?On high mountains the air pressure is lower, so the boiling point drops and water starts to boil at a lower temperature.

Vapor Pressure: The pressure exerted by the vapor of a liquid in thermodynamic equilibrium with its condensed phases.
Latent Heat of Vaporization: The amount of energy required to change a unit mass of a substance from liquid to gas at constant temperature.
Nucleation Sites: Specific points on a surface where bubbles begin to form during boiling.