Phase diagram

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/phase-diagram

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 thermodynamic basis?Phase diagrams represent states of minimum Gibbs free energy for a system
2. Why do scientists use phase diagrams?They help scientists see which phase is most stable and plan things like making new materials or designing cooling systems.
3. What happens at a triple point on a phase diagram?At a triple point, solid, liquid, and gas all exist together in balance.

Gibbs Free Energy: A thermodynamic potential that measures the maximum reversible work obtainable from a thermodynamic system at constant temperature and pressure.
Phase Rule: A fundamental equation in physical chemistry that relates the number of phases, components, and degrees of freedom in a system at equilibrium.
Supercritical Fluid: A substance at a temperature and pressure above its critical point, exhibiting unique solvent properties.